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Finding the Fourth Proportional to 576,066.60, 862,587.90 and 406,672.20

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Solution

The fourth proportional to 576,066.60, 862,587.90 and 406,672.20 is: 608,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,066.60 : 862,587.90 = 406,672.20 : x
  2. Step 2: Convert to fraction form
    576,066.60/862,587.90 = 406,672.20/x
  3. Step 3: Cross multiply
    576,066.60x = 862,587.90 × 406,672.20
  4. Step 4: Simplify right side
    576,066.60x = 350,790,518,986.38
  5. Step 5: Solve for x
    x = 350,790,518,986.38/576,066.60
  6. Step 6: Final answer
    x = 608,940.91

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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.