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Finding the Fourth Proportional to 119,957.55, 165,538.23 and 65,511.19

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Solution

The fourth proportional to 119,957.55, 165,538.23 and 65,511.19 is: 90,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,957.55 : 165,538.23 = 65,511.19 : x
  2. Step 2: Convert to fraction form
    119,957.55/165,538.23 = 65,511.19/x
  3. Step 3: Cross multiply
    119,957.55x = 165,538.23 × 65,511.19
  4. Step 4: Simplify right side
    119,957.55x = 10,844,605,849.15
  5. Step 5: Solve for x
    x = 10,844,605,849.15/119,957.55
  6. Step 6: Final answer
    x = 90,403.70

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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.