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Finding the Fourth Proportional to 457,731.60, 686,597.40 and 417,181.20

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Solution

The fourth proportional to 457,731.60, 686,597.40 and 417,181.20 is: 625,771.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,731.60 : 686,597.40 = 417,181.20 : x
  2. Step 2: Convert to fraction form
    457,731.60/686,597.40 = 417,181.20/x
  3. Step 3: Cross multiply
    457,731.60x = 686,597.40 × 417,181.20
  4. Step 4: Simplify right side
    457,731.60x = 286,435,527,248.88
  5. Step 5: Solve for x
    x = 286,435,527,248.88/457,731.60
  6. Step 6: Final answer
    x = 625,771.80

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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.