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Finding the Fourth Proportional to 66,319.92, 91,540.80 and 52,984.08

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Solution

The fourth proportional to 66,319.92, 91,540.80 and 52,984.08 is: 73,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,319.92 : 91,540.80 = 52,984.08 : x
  2. Step 2: Convert to fraction form
    66,319.92/91,540.80 = 52,984.08/x
  3. Step 3: Cross multiply
    66,319.92x = 91,540.80 × 52,984.08
  4. Step 4: Simplify right side
    66,319.92x = 4,850,205,070.46
  5. Step 5: Solve for x
    x = 4,850,205,070.46/66,319.92
  6. Step 6: Final answer
    x = 73,133.46

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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.