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Finding the Fourth Proportional to 92,131.80, 138,207.57 and 25,572.21

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Solution

The fourth proportional to 92,131.80, 138,207.57 and 25,572.21 is: 38,361.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,131.80 : 138,207.57 = 25,572.21 : x
  2. Step 2: Convert to fraction form
    92,131.80/138,207.57 = 25,572.21/x
  3. Step 3: Cross multiply
    92,131.80x = 138,207.57 × 25,572.21
  4. Step 4: Simplify right side
    92,131.80x = 3,534,272,312.59
  5. Step 5: Solve for x
    x = 3,534,272,312.59/92,131.80
  6. Step 6: Final answer
    x = 38,361.05

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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.