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Finding the Fourth Proportional to 119,663.77, 165,128.57 and 65,945.78

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Solution

The fourth proportional to 119,663.77, 165,128.57 and 65,945.78 is: 91,001.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,663.77 : 165,128.57 = 65,945.78 : x
  2. Step 2: Convert to fraction form
    119,663.77/165,128.57 = 65,945.78/x
  3. Step 3: Cross multiply
    119,663.77x = 165,128.57 × 65,945.78
  4. Step 4: Simplify right side
    119,663.77x = 10,889,532,926.62
  5. Step 5: Solve for x
    x = 10,889,532,926.62/119,663.77
  6. Step 6: Final answer
    x = 91,001.09

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1.5x scale

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.