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Finding the Fourth Proportional to 61,790.65, 92,686.88 and 42,796.55

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Solution

The fourth proportional to 61,790.65, 92,686.88 and 42,796.55 is: 64,195.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,790.65 : 92,686.88 = 42,796.55 : x
  2. Step 2: Convert to fraction form
    61,790.65/92,686.88 = 42,796.55/x
  3. Step 3: Cross multiply
    61,790.65x = 92,686.88 × 42,796.55
  4. Step 4: Simplify right side
    61,790.65x = 3,966,679,032.97
  5. Step 5: Solve for x
    x = 3,966,679,032.97/61,790.65
  6. Step 6: Final answer
    x = 64,195.46

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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.