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Finding the Fourth Proportional to 127,886.65, 176,503.66 and 100,600.79

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Solution

The fourth proportional to 127,886.65, 176,503.66 and 100,600.79 is: 138,844.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,886.65 : 176,503.66 = 100,600.79 : x
  2. Step 2: Convert to fraction form
    127,886.65/176,503.66 = 100,600.79/x
  3. Step 3: Cross multiply
    127,886.65x = 176,503.66 × 100,600.79
  4. Step 4: Simplify right side
    127,886.65x = 17,756,406,499.87
  5. Step 5: Solve for x
    x = 17,756,406,499.87/127,886.65
  6. Step 6: Final answer
    x = 138,844.88

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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.