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Finding the Fourth Proportional to 98,472.86, 147,679.21 and 64,737.47

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Solution

The fourth proportional to 98,472.86, 147,679.21 and 64,737.47 is: 97,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,472.86 : 147,679.21 = 64,737.47 : x
  2. Step 2: Convert to fraction form
    98,472.86/147,679.21 = 64,737.47/x
  3. Step 3: Cross multiply
    98,472.86x = 147,679.21 × 64,737.47
  4. Step 4: Simplify right side
    98,472.86x = 9,560,378,634.35
  5. Step 5: Solve for x
    x = 9,560,378,634.35/98,472.86
  6. Step 6: Final answer
    x = 97,086.44

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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.