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Finding the Fourth Proportional to 719,060.35, 992,302.13 and 396,770.21

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Solution

The fourth proportional to 719,060.35, 992,302.13 and 396,770.21 is: 547,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,060.35 : 992,302.13 = 396,770.21 : x
  2. Step 2: Convert to fraction form
    719,060.35/992,302.13 = 396,770.21/x
  3. Step 3: Cross multiply
    719,060.35x = 992,302.13 × 396,770.21
  4. Step 4: Simplify right side
    719,060.35x = 393,715,924,503.55
  5. Step 5: Solve for x
    x = 393,715,924,503.55/719,060.35
  6. Step 6: Final answer
    x = 547,542.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.