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Finding the Fourth Proportional to 61,437.85, 92,178.95 and 21,462.74

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Solution

The fourth proportional to 61,437.85, 92,178.95 and 21,462.74 is: 32,201.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,437.85 : 92,178.95 = 21,462.74 : x
  2. Step 2: Convert to fraction form
    61,437.85/92,178.95 = 21,462.74/x
  3. Step 3: Cross multiply
    61,437.85x = 92,178.95 × 21,462.74
  4. Step 4: Simplify right side
    61,437.85x = 1,978,412,376.43
  5. Step 5: Solve for x
    x = 1,978,412,376.43/61,437.85
  6. Step 6: Final answer
    x = 32,201.85

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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.