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Finding the Fourth Proportional to 225,755.16, 311,542.56 and 125,153.16

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Solution

The fourth proportional to 225,755.16, 311,542.56 and 125,153.16 is: 172,711.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,755.16 : 311,542.56 = 125,153.16 : x
  2. Step 2: Convert to fraction form
    225,755.16/311,542.56 = 125,153.16/x
  3. Step 3: Cross multiply
    225,755.16x = 311,542.56 × 125,153.16
  4. Step 4: Simplify right side
    225,755.16x = 38,990,535,858.49
  5. Step 5: Solve for x
    x = 38,990,535,858.49/225,755.16
  6. Step 6: Final answer
    x = 172,711.60

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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.