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Finding the Fourth Proportional to 66,088.31, 91,199.39 and 35,872.97

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Solution

The fourth proportional to 66,088.31, 91,199.39 and 35,872.97 is: 49,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,088.31 : 91,199.39 = 35,872.97 : x
  2. Step 2: Convert to fraction form
    66,088.31/91,199.39 = 35,872.97/x
  3. Step 3: Cross multiply
    66,088.31x = 91,199.39 × 35,872.97
  4. Step 4: Simplify right side
    66,088.31x = 3,271,592,346.13
  5. Step 5: Solve for x
    x = 3,271,592,346.13/66,088.31
  6. Step 6: Final answer
    x = 49,503.35

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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.