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Finding the Fourth Proportional to 160,656.68, 221,713.69 and 89,036.71

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Solution

The fourth proportional to 160,656.68, 221,713.69 and 89,036.71 is: 122,874.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,656.68 : 221,713.69 = 89,036.71 : x
  2. Step 2: Convert to fraction form
    160,656.68/221,713.69 = 89,036.71/x
  3. Step 3: Cross multiply
    160,656.68x = 221,713.69 × 89,036.71
  4. Step 4: Simplify right side
    160,656.68x = 19,740,656,410.99
  5. Step 5: Solve for x
    x = 19,740,656,410.99/160,656.68
  6. Step 6: Final answer
    x = 122,874.80

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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.