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Finding the Fourth Proportional to 159,116.97, 219,526.77 and 98,665.86

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Solution

The fourth proportional to 159,116.97, 219,526.77 and 98,665.86 is: 136,125.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,116.97 : 219,526.77 = 98,665.86 : x
  2. Step 2: Convert to fraction form
    159,116.97/219,526.77 = 98,665.86/x
  3. Step 3: Cross multiply
    159,116.97x = 219,526.77 × 98,665.86
  4. Step 4: Simplify right side
    159,116.97x = 21,659,797,555.07
  5. Step 5: Solve for x
    x = 21,659,797,555.07/159,116.97
  6. Step 6: Final answer
    x = 136,125.00

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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.