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Finding the Fourth Proportional to 119,695.55, 165,172.43 and 65,977.79

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Solution

The fourth proportional to 119,695.55, 165,172.43 and 65,977.79 is: 91,045.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,695.55 : 165,172.43 = 65,977.79 : x
  2. Step 2: Convert to fraction form
    119,695.55/165,172.43 = 65,977.79/x
  3. Step 3: Cross multiply
    119,695.55x = 165,172.43 × 65,977.79
  4. Step 4: Simplify right side
    119,695.55x = 10,897,711,239.41
  5. Step 5: Solve for x
    x = 10,897,711,239.41/119,695.55
  6. Step 6: Final answer
    x = 91,045.25

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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.