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Finding the Fourth Proportional to 127,708.94, 176,268.81 and 74,023.56

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Solution

The fourth proportional to 127,708.94, 176,268.81 and 74,023.56 is: 102,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.94 : 176,268.81 = 74,023.56 : x
  2. Step 2: Convert to fraction form
    127,708.94/176,268.81 = 74,023.56/x
  3. Step 3: Cross multiply
    127,708.94x = 176,268.81 × 74,023.56
  4. Step 4: Simplify right side
    127,708.94x = 13,048,044,833.16
  5. Step 5: Solve for x
    x = 13,048,044,833.16/127,708.94
  6. Step 6: Final answer
    x = 102,170.18

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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.