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Finding the Fourth Proportional to 42,891.48, 64,287.48 and 25,376.04

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Solution

The fourth proportional to 42,891.48, 64,287.48 and 25,376.04 is: 38,034.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,891.48 : 64,287.48 = 25,376.04 : x
  2. Step 2: Convert to fraction form
    42,891.48/64,287.48 = 25,376.04/x
  3. Step 3: Cross multiply
    42,891.48x = 64,287.48 × 25,376.04
  4. Step 4: Simplify right side
    42,891.48x = 1,631,361,663.98
  5. Step 5: Solve for x
    x = 1,631,361,663.98/42,891.48
  6. Step 6: Final answer
    x = 38,034.63

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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.