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Finding the Fourth Proportional to 492,732.60, 739,098.90 and 386,444.40

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Solution

The fourth proportional to 492,732.60, 739,098.90 and 386,444.40 is: 579,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,732.60 : 739,098.90 = 386,444.40 : x
  2. Step 2: Convert to fraction form
    492,732.60/739,098.90 = 386,444.40/x
  3. Step 3: Cross multiply
    492,732.60x = 739,098.90 × 386,444.40
  4. Step 4: Simplify right side
    492,732.60x = 285,620,630,951.16
  5. Step 5: Solve for x
    x = 285,620,630,951.16/492,732.60
  6. Step 6: Final answer
    x = 579,666.60

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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.