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Finding the Fourth Proportional to 61,615.59, 92,384.75 and 28,292.90

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Solution

The fourth proportional to 61,615.59, 92,384.75 and 28,292.90 is: 42,421.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,615.59 : 92,384.75 = 28,292.90 : x
  2. Step 2: Convert to fraction form
    61,615.59/92,384.75 = 28,292.90/x
  3. Step 3: Cross multiply
    61,615.59x = 92,384.75 × 28,292.90
  4. Step 4: Simplify right side
    61,615.59x = 2,613,832,102.08
  5. Step 5: Solve for x
    x = 2,613,832,102.08/61,615.59
  6. Step 6: Final answer
    x = 42,421.61

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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.