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Finding the Fourth Proportional to 61,899.79, 92,838.70 and 28,157.95

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Solution

The fourth proportional to 61,899.79, 92,838.70 and 28,157.95 is: 42,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.79 : 92,838.70 = 28,157.95 : x
  2. Step 2: Convert to fraction form
    61,899.79/92,838.70 = 28,157.95/x
  3. Step 3: Cross multiply
    61,899.79x = 92,838.70 × 28,157.95
  4. Step 4: Simplify right side
    61,899.79x = 2,614,147,472.67
  5. Step 5: Solve for x
    x = 2,614,147,472.67/61,899.79
  6. Step 6: Final answer
    x = 42,231.93

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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.