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Finding the Fourth Proportional to 96,315.60, 133,047.72 and 87,373.20

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Solution

The fourth proportional to 96,315.60, 133,047.72 and 87,373.20 is: 120,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,315.60 : 133,047.72 = 87,373.20 : x
  2. Step 2: Convert to fraction form
    96,315.60/133,047.72 = 87,373.20/x
  3. Step 3: Cross multiply
    96,315.60x = 133,047.72 × 87,373.20
  4. Step 4: Simplify right side
    96,315.60x = 11,624,805,049.10
  5. Step 5: Solve for x
    x = 11,624,805,049.10/96,315.60
  6. Step 6: Final answer
    x = 120,694.93

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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.