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Finding the Fourth Proportional to 61,806.61, 92,614.01 and 42,868.22

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Solution

The fourth proportional to 61,806.61, 92,614.01 and 42,868.22 is: 64,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,806.61 : 92,614.01 = 42,868.22 : x
  2. Step 2: Convert to fraction form
    61,806.61/92,614.01 = 42,868.22/x
  3. Step 3: Cross multiply
    61,806.61x = 92,614.01 × 42,868.22
  4. Step 4: Simplify right side
    61,806.61x = 3,970,197,599.30
  5. Step 5: Solve for x
    x = 3,970,197,599.30/61,806.61
  6. Step 6: Final answer
    x = 64,235.81

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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.