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Finding the Fourth Proportional to 579,772.40, 869,658.60 and 411,810.80

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Solution

The fourth proportional to 579,772.40, 869,658.60 and 411,810.80 is: 617,716.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,772.40 : 869,658.60 = 411,810.80 : x
  2. Step 2: Convert to fraction form
    579,772.40/869,658.60 = 411,810.80/x
  3. Step 3: Cross multiply
    579,772.40x = 869,658.60 × 411,810.80
  4. Step 4: Simplify right side
    579,772.40x = 358,134,803,792.88
  5. Step 5: Solve for x
    x = 358,134,803,792.88/579,772.40
  6. Step 6: Final answer
    x = 617,716.20

Related Problems

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Half scale
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Double scale
Find fourth proportional to 579,773.40, 869,660.10 and 411,811.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.