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Finding the Fourth Proportional to 90,744.30, 123,622.20 and 90,744.30

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Solution

The fourth proportional to 90,744.30, 123,622.20 and 90,744.30 is: 123,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,744.30 : 123,622.20 = 90,744.30 : x
  2. Step 2: Convert to fraction form
    90,744.30/123,622.20 = 90,744.30/x
  3. Step 3: Cross multiply
    90,744.30x = 123,622.20 × 90,744.30
  4. Step 4: Simplify right side
    90,744.30x = 11,218,010,003.46
  5. Step 5: Solve for x
    x = 11,218,010,003.46/90,744.30
  6. Step 6: Final answer
    x = 123,622.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.