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Finding the Fourth Proportional to 579,668.70, 869,503.05 and 411,707.10

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Solution

The fourth proportional to 579,668.70, 869,503.05 and 411,707.10 is: 617,560.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,668.70 : 869,503.05 = 411,707.10 : x
  2. Step 2: Convert to fraction form
    579,668.70/869,503.05 = 411,707.10/x
  3. Step 3: Cross multiply
    579,668.70x = 869,503.05 × 411,707.10
  4. Step 4: Simplify right side
    579,668.70x = 357,980,579,156.66
  5. Step 5: Solve for x
    x = 357,980,579,156.66/579,668.70
  6. Step 6: Final answer
    x = 617,560.65

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Double scale
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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.