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Finding the Fourth Proportional to 79,200.80, 109,307.92 and 48,568.48

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Solution

The fourth proportional to 79,200.80, 109,307.92 and 48,568.48 is: 67,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.80 : 109,307.92 = 48,568.48 : x
  2. Step 2: Convert to fraction form
    79,200.80/109,307.92 = 48,568.48/x
  3. Step 3: Cross multiply
    79,200.80x = 109,307.92 × 48,568.48
  4. Step 4: Simplify right side
    79,200.80x = 5,308,919,526.36
  5. Step 5: Solve for x
    x = 5,308,919,526.36/79,200.80
  6. Step 6: Final answer
    x = 67,031.14

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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.