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Finding the Fourth Proportional to 159,988.92, 220,798.38 and 88,376.76

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Solution

The fourth proportional to 159,988.92, 220,798.38 and 88,376.76 is: 121,967.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,988.92 : 220,798.38 = 88,376.76 : x
  2. Step 2: Convert to fraction form
    159,988.92/220,798.38 = 88,376.76/x
  3. Step 3: Cross multiply
    159,988.92x = 220,798.38 × 88,376.76
  4. Step 4: Simplify right side
    159,988.92x = 19,513,445,437.65
  5. Step 5: Solve for x
    x = 19,513,445,437.65/159,988.92
  6. Step 6: Final answer
    x = 121,967.48

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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.