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Finding the Fourth Proportional to 88,097.70, 121,574.92 and 47,811.48

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Solution

The fourth proportional to 88,097.70, 121,574.92 and 47,811.48 is: 65,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,097.70 : 121,574.92 = 47,811.48 : x
  2. Step 2: Convert to fraction form
    88,097.70/121,574.92 = 47,811.48/x
  3. Step 3: Cross multiply
    88,097.70x = 121,574.92 × 47,811.48
  4. Step 4: Simplify right side
    88,097.70x = 5,812,676,856.08
  5. Step 5: Solve for x
    x = 5,812,676,856.08/88,097.70
  6. Step 6: Final answer
    x = 65,979.89

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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.