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Finding the Fourth Proportional to 66,070.46, 91,177.90 and 35,856.04

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Solution

The fourth proportional to 66,070.46, 91,177.90 and 35,856.04 is: 49,481.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,070.46 : 91,177.90 = 35,856.04 : x
  2. Step 2: Convert to fraction form
    66,070.46/91,177.90 = 35,856.04/x
  3. Step 3: Cross multiply
    66,070.46x = 91,177.90 × 35,856.04
  4. Step 4: Simplify right side
    66,070.46x = 3,269,278,741.02
  5. Step 5: Solve for x
    x = 3,269,278,741.02/66,070.46
  6. Step 6: Final answer
    x = 49,481.70

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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.