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Finding the Fourth Proportional to 61,860.75, 92,963.93 and 57,877.71

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Solution

The fourth proportional to 61,860.75, 92,963.93 and 57,877.71 is: 86,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,860.75 : 92,963.93 = 57,877.71 : x
  2. Step 2: Convert to fraction form
    61,860.75/92,963.93 = 57,877.71/x
  3. Step 3: Cross multiply
    61,860.75x = 92,963.93 × 57,877.71
  4. Step 4: Simplify right side
    61,860.75x = 5,380,539,091.61
  5. Step 5: Solve for x
    x = 5,380,539,091.61/61,860.75
  6. Step 6: Final answer
    x = 86,978.24

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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.