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Finding the Fourth Proportional to 119,569.15, 165,006.48 and 65,856.03

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Solution

The fourth proportional to 119,569.15, 165,006.48 and 65,856.03 is: 90,881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,569.15 : 165,006.48 = 65,856.03 : x
  2. Step 2: Convert to fraction form
    119,569.15/165,006.48 = 65,856.03/x
  3. Step 3: Cross multiply
    119,569.15x = 165,006.48 × 65,856.03
  4. Step 4: Simplify right side
    119,569.15x = 10,866,670,872.04
  5. Step 5: Solve for x
    x = 10,866,670,872.04/119,569.15
  6. Step 6: Final answer
    x = 90,881.89

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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.