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Finding the Fourth Proportional to 145,248.85, 217,789.44 and 56,398.53

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Solution

The fourth proportional to 145,248.85, 217,789.44 and 56,398.53 is: 84,565.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,248.85 : 217,789.44 = 56,398.53 : x
  2. Step 2: Convert to fraction form
    145,248.85/217,789.44 = 56,398.53/x
  3. Step 3: Cross multiply
    145,248.85x = 217,789.44 × 56,398.53
  4. Step 4: Simplify right side
    145,248.85x = 12,283,004,265.52
  5. Step 5: Solve for x
    x = 12,283,004,265.52/145,248.85
  6. Step 6: Final answer
    x = 84,565.24

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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.