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Finding the Fourth Proportional to 111,593.88, 153,990.42 and 61,292.84

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Solution

The fourth proportional to 111,593.88, 153,990.42 and 61,292.84 is: 84,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,593.88 : 153,990.42 = 61,292.84 : x
  2. Step 2: Convert to fraction form
    111,593.88/153,990.42 = 61,292.84/x
  3. Step 3: Cross multiply
    111,593.88x = 153,990.42 × 61,292.84
  4. Step 4: Simplify right side
    111,593.88x = 9,438,510,174.59
  5. Step 5: Solve for x
    x = 9,438,510,174.59/111,593.88
  6. Step 6: Final answer
    x = 84,579.10

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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.