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Finding the Fourth Proportional to 651,679.60, 977,519.40 and 651,679.60

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Solution

The fourth proportional to 651,679.60, 977,519.40 and 651,679.60 is: 977,519.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,679.60 : 977,519.40 = 651,679.60 : x
  2. Step 2: Convert to fraction form
    651,679.60/977,519.40 = 651,679.60/x
  3. Step 3: Cross multiply
    651,679.60x = 977,519.40 × 651,679.60
  4. Step 4: Simplify right side
    651,679.60x = 637,029,451,584.24
  5. Step 5: Solve for x
    x = 637,029,451,584.24/651,679.60
  6. Step 6: Final answer
    x = 977,519.40

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Half scale
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Double scale
Find fourth proportional to 651,680.60, 977,520.90 and 651,680.60
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.