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Finding the Fourth Proportional to 93,717.20, 140,420.28 and 65,956.88

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Solution

The fourth proportional to 93,717.20, 140,420.28 and 65,956.88 is: 98,825.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,717.20 : 140,420.28 = 65,956.88 : x
  2. Step 2: Convert to fraction form
    93,717.20/140,420.28 = 65,956.88/x
  3. Step 3: Cross multiply
    93,717.20x = 140,420.28 × 65,956.88
  4. Step 4: Simplify right side
    93,717.20x = 9,261,683,557.53
  5. Step 5: Solve for x
    x = 9,261,683,557.53/93,717.20
  6. Step 6: Final answer
    x = 98,825.87

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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.