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Finding the Fourth Proportional to 81,592.61, 122,368.13 and 25,422.24

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Solution

The fourth proportional to 81,592.61, 122,368.13 and 25,422.24 is: 38,126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,592.61 : 122,368.13 = 25,422.24 : x
  2. Step 2: Convert to fraction form
    81,592.61/122,368.13 = 25,422.24/x
  3. Step 3: Cross multiply
    81,592.61x = 122,368.13 × 25,422.24
  4. Step 4: Simplify right side
    81,592.61x = 3,110,871,842.10
  5. Step 5: Solve for x
    x = 3,110,871,842.10/81,592.61
  6. Step 6: Final answer
    x = 38,126.88

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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.