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Finding the Fourth Proportional to 89,891.66, 124,012.75 and 63,051.71

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Solution

The fourth proportional to 89,891.66, 124,012.75 and 63,051.71 is: 86,984.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,891.66 : 124,012.75 = 63,051.71 : x
  2. Step 2: Convert to fraction form
    89,891.66/124,012.75 = 63,051.71/x
  3. Step 3: Cross multiply
    89,891.66x = 124,012.75 × 63,051.71
  4. Step 4: Simplify right side
    89,891.66x = 7,819,215,171.61
  5. Step 5: Solve for x
    x = 7,819,215,171.61/89,891.66
  6. Step 6: Final answer
    x = 86,984.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.