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Finding the Fourth Proportional to 119,887.11, 165,441.69 and 65,437.48

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Solution

The fourth proportional to 119,887.11, 165,441.69 and 65,437.48 is: 90,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,887.11 : 165,441.69 = 65,437.48 : x
  2. Step 2: Convert to fraction form
    119,887.11/165,441.69 = 65,437.48/x
  3. Step 3: Cross multiply
    119,887.11x = 165,441.69 × 65,437.48
  4. Step 4: Simplify right side
    119,887.11x = 10,826,087,280.54
  5. Step 5: Solve for x
    x = 10,826,087,280.54/119,887.11
  6. Step 6: Final answer
    x = 90,302.35

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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.