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Finding the Fourth Proportional to 72,197.98, 99,593.20 and 41,979.96

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Solution

The fourth proportional to 72,197.98, 99,593.20 and 41,979.96 is: 57,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,197.98 : 99,593.20 = 41,979.96 : x
  2. Step 2: Convert to fraction form
    72,197.98/99,593.20 = 41,979.96/x
  3. Step 3: Cross multiply
    72,197.98x = 99,593.20 × 41,979.96
  4. Step 4: Simplify right side
    72,197.98x = 4,180,918,303.29
  5. Step 5: Solve for x
    x = 4,180,918,303.29/72,197.98
  6. Step 6: Final answer
    x = 57,909.08

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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.