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Finding the Fourth Proportional to 124,054.80, 186,082.20 and 115,306.80

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Solution

The fourth proportional to 124,054.80, 186,082.20 and 115,306.80 is: 172,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,054.80 : 186,082.20 = 115,306.80 : x
  2. Step 2: Convert to fraction form
    124,054.80/186,082.20 = 115,306.80/x
  3. Step 3: Cross multiply
    124,054.80x = 186,082.20 × 115,306.80
  4. Step 4: Simplify right side
    124,054.80x = 21,456,543,018.96
  5. Step 5: Solve for x
    x = 21,456,543,018.96/124,054.80
  6. Step 6: Final answer
    x = 172,960.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.