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Finding the Fourth Proportional to 86,175.56, 129,193.62 and 38,755.93

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Solution

The fourth proportional to 86,175.56, 129,193.62 and 38,755.93 is: 58,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,175.56 : 129,193.62 = 38,755.93 : x
  2. Step 2: Convert to fraction form
    86,175.56/129,193.62 = 38,755.93/x
  3. Step 3: Cross multiply
    86,175.56x = 129,193.62 × 38,755.93
  4. Step 4: Simplify right side
    86,175.56x = 5,007,018,893.17
  5. Step 5: Solve for x
    x = 5,007,018,893.17/86,175.56
  6. Step 6: Final answer
    x = 58,102.54

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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.