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Finding the Fourth Proportional to 61,710.64, 85,160.10 and 36,217.24

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Solution

The fourth proportional to 61,710.64, 85,160.10 and 36,217.24 is: 49,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,710.64 : 85,160.10 = 36,217.24 : x
  2. Step 2: Convert to fraction form
    61,710.64/85,160.10 = 36,217.24/x
  3. Step 3: Cross multiply
    61,710.64x = 85,160.10 × 36,217.24
  4. Step 4: Simplify right side
    61,710.64x = 3,084,263,780.12
  5. Step 5: Solve for x
    x = 3,084,263,780.12/61,710.64
  6. Step 6: Final answer
    x = 49,979.45

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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.