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Finding the Fourth Proportional to 86,531.32, 129,820.04 and 27,368.08

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Solution

The fourth proportional to 86,531.32, 129,820.04 and 27,368.08 is: 41,059.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,531.32 : 129,820.04 = 27,368.08 : x
  2. Step 2: Convert to fraction form
    86,531.32/129,820.04 = 27,368.08/x
  3. Step 3: Cross multiply
    86,531.32x = 129,820.04 × 27,368.08
  4. Step 4: Simplify right side
    86,531.32x = 3,552,925,240.32
  5. Step 5: Solve for x
    x = 3,552,925,240.32/86,531.32
  6. Step 6: Final answer
    x = 41,059.41

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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.