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Finding the Fourth Proportional to 86,614.53, 129,921.83 and 63,071.91

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Solution

The fourth proportional to 86,614.53, 129,921.83 and 63,071.91 is: 94,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,614.53 : 129,921.83 = 63,071.91 : x
  2. Step 2: Convert to fraction form
    86,614.53/129,921.83 = 63,071.91/x
  3. Step 3: Cross multiply
    86,614.53x = 129,921.83 × 63,071.91
  4. Step 4: Simplify right side
    86,614.53x = 8,194,417,653.44
  5. Step 5: Solve for x
    x = 8,194,417,653.44/86,614.53
  6. Step 6: Final answer
    x = 94,607.89

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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.