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Finding the Fourth Proportional to 61,807.61, 92,615.50 and 42,869.22

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Solution

The fourth proportional to 61,807.61, 92,615.50 and 42,869.22 is: 64,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,807.61 : 92,615.50 = 42,869.22 : x
  2. Step 2: Convert to fraction form
    61,807.61/92,615.50 = 42,869.22/x
  3. Step 3: Cross multiply
    61,807.61x = 92,615.50 × 42,869.22
  4. Step 4: Simplify right side
    61,807.61x = 3,970,354,244.91
  5. Step 5: Solve for x
    x = 3,970,354,244.91/61,807.61
  6. Step 6: Final answer
    x = 64,237.30

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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.