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Finding the Fourth Proportional to 61,871.97, 92,688.57 and 36,931.98

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Solution

The fourth proportional to 61,871.97, 92,688.57 and 36,931.98 is: 55,326.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,871.97 : 92,688.57 = 36,931.98 : x
  2. Step 2: Convert to fraction form
    61,871.97/92,688.57 = 36,931.98/x
  3. Step 3: Cross multiply
    61,871.97x = 92,688.57 × 36,931.98
  4. Step 4: Simplify right side
    61,871.97x = 3,423,172,413.47
  5. Step 5: Solve for x
    x = 3,423,172,413.47/61,871.97
  6. Step 6: Final answer
    x = 55,326.71

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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.