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Finding the Fourth Proportional to 79,220.88, 109,322.28 and 45,691.92

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Solution

The fourth proportional to 79,220.88, 109,322.28 and 45,691.92 is: 63,053.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,220.88 : 109,322.28 = 45,691.92 : x
  2. Step 2: Convert to fraction form
    79,220.88/109,322.28 = 45,691.92/x
  3. Step 3: Cross multiply
    79,220.88x = 109,322.28 × 45,691.92
  4. Step 4: Simplify right side
    79,220.88x = 4,995,144,871.98
  5. Step 5: Solve for x
    x = 4,995,144,871.98/79,220.88
  6. Step 6: Final answer
    x = 63,053.39

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1.5x scale

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.