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Finding the Fourth Proportional to 42,291.96, 63,476.82 and 39,751.80

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Solution

The fourth proportional to 42,291.96, 63,476.82 and 39,751.80 is: 59,664.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,291.96 : 63,476.82 = 39,751.80 : x
  2. Step 2: Convert to fraction form
    42,291.96/63,476.82 = 39,751.80/x
  3. Step 3: Cross multiply
    42,291.96x = 63,476.82 × 39,751.80
  4. Step 4: Simplify right side
    42,291.96x = 2,523,317,853.28
  5. Step 5: Solve for x
    x = 2,523,317,853.28/42,291.96
  6. Step 6: Final answer
    x = 59,664.24

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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.