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Finding the Fourth Proportional to 66,070.69, 91,177.61 and 35,856.01

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Solution

The fourth proportional to 66,070.69, 91,177.61 and 35,856.01 is: 49,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,070.69 : 91,177.61 = 35,856.01 : x
  2. Step 2: Convert to fraction form
    66,070.69/91,177.61 = 35,856.01/x
  3. Step 3: Cross multiply
    66,070.69x = 91,177.61 × 35,856.01
  4. Step 4: Simplify right side
    66,070.69x = 3,269,265,116.66
  5. Step 5: Solve for x
    x = 3,269,265,116.66/66,070.69
  6. Step 6: Final answer
    x = 49,481.33

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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.