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Finding the Fourth Proportional to 160,661.61, 221,713.05 and 89,046.26

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Solution

The fourth proportional to 160,661.61, 221,713.05 and 89,046.26 is: 122,883.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,661.61 : 221,713.05 = 89,046.26 : x
  2. Step 2: Convert to fraction form
    160,661.61/221,713.05 = 89,046.26/x
  3. Step 3: Cross multiply
    160,661.61x = 221,713.05 × 89,046.26
  4. Step 4: Simplify right side
    160,661.61x = 19,742,717,895.69
  5. Step 5: Solve for x
    x = 19,742,717,895.69/160,661.61
  6. Step 6: Final answer
    x = 122,883.85

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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.