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Finding the Fourth Proportional to 61,008.30, 84,132.32 and 47,574.66

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Solution

The fourth proportional to 61,008.30, 84,132.32 and 47,574.66 is: 65,606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,008.30 : 84,132.32 = 47,574.66 : x
  2. Step 2: Convert to fraction form
    61,008.30/84,132.32 = 47,574.66/x
  3. Step 3: Cross multiply
    61,008.30x = 84,132.32 × 47,574.66
  4. Step 4: Simplify right side
    61,008.30x = 4,002,566,281.14
  5. Step 5: Solve for x
    x = 4,002,566,281.14/61,008.30
  6. Step 6: Final answer
    x = 65,606.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.