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Finding the Fourth Proportional to 616,129.20, 924,193.80 and 543,812.40

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Solution

The fourth proportional to 616,129.20, 924,193.80 and 543,812.40 is: 815,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,129.20 : 924,193.80 = 543,812.40 : x
  2. Step 2: Convert to fraction form
    616,129.20/924,193.80 = 543,812.40/x
  3. Step 3: Cross multiply
    616,129.20x = 924,193.80 × 543,812.40
  4. Step 4: Simplify right side
    616,129.20x = 502,588,048,443.12
  5. Step 5: Solve for x
    x = 502,588,048,443.12/616,129.20
  6. Step 6: Final answer
    x = 815,718.60

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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.