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Finding the Fourth Proportional to 316,100.92, 474,151.80 and 129,112.48

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Solution

The fourth proportional to 316,100.92, 474,151.80 and 129,112.48 is: 193,668.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,100.92 : 474,151.80 = 129,112.48 : x
  2. Step 2: Convert to fraction form
    316,100.92/474,151.80 = 129,112.48/x
  3. Step 3: Cross multiply
    316,100.92x = 474,151.80 × 129,112.48
  4. Step 4: Simplify right side
    316,100.92x = 61,218,914,794.46
  5. Step 5: Solve for x
    x = 61,218,914,794.46/316,100.92
  6. Step 6: Final answer
    x = 193,668.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.