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Finding the Fourth Proportional to 135,476.38, 186,957.38 and 74,224.75

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Solution

The fourth proportional to 135,476.38, 186,957.38 and 74,224.75 is: 102,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,476.38 : 186,957.38 = 74,224.75 : x
  2. Step 2: Convert to fraction form
    135,476.38/186,957.38 = 74,224.75/x
  3. Step 3: Cross multiply
    135,476.38x = 186,957.38 × 74,224.75
  4. Step 4: Simplify right side
    135,476.38x = 13,876,863,485.24
  5. Step 5: Solve for x
    x = 13,876,863,485.24/135,476.38
  6. Step 6: Final answer
    x = 102,430.13

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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.