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Finding the Fourth Proportional to 482,762.20, 724,143.30 and 447,770.20

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Solution

The fourth proportional to 482,762.20, 724,143.30 and 447,770.20 is: 671,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,762.20 : 724,143.30 = 447,770.20 : x
  2. Step 2: Convert to fraction form
    482,762.20/724,143.30 = 447,770.20/x
  3. Step 3: Cross multiply
    482,762.20x = 724,143.30 × 447,770.20
  4. Step 4: Simplify right side
    482,762.20x = 324,249,790,269.66
  5. Step 5: Solve for x
    x = 324,249,790,269.66/482,762.20
  6. Step 6: Final answer
    x = 671,655.30

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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.