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Finding the Fourth Proportional to 127,806.56, 176,373.75 and 74,123.41

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Solution

The fourth proportional to 127,806.56, 176,373.75 and 74,123.41 is: 102,290.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,806.56 : 176,373.75 = 74,123.41 : x
  2. Step 2: Convert to fraction form
    127,806.56/176,373.75 = 74,123.41/x
  3. Step 3: Cross multiply
    127,806.56x = 176,373.75 × 74,123.41
  4. Step 4: Simplify right side
    127,806.56x = 13,073,423,784.49
  5. Step 5: Solve for x
    x = 13,073,423,784.49/127,806.56
  6. Step 6: Final answer
    x = 102,290.71

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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.