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Finding the Fourth Proportional to 61,153.30, 91,729.95 and 55,710.10

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Solution

The fourth proportional to 61,153.30, 91,729.95 and 55,710.10 is: 83,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,153.30 : 91,729.95 = 55,710.10 : x
  2. Step 2: Convert to fraction form
    61,153.30/91,729.95 = 55,710.10/x
  3. Step 3: Cross multiply
    61,153.30x = 91,729.95 × 55,710.10
  4. Step 4: Simplify right side
    61,153.30x = 5,110,284,687.50
  5. Step 5: Solve for x
    x = 5,110,284,687.50/61,153.30
  6. Step 6: Final answer
    x = 83,565.15

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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.