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Finding the Fourth Proportional to 72,449.56, 99,988.59 and 48,249.19

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Solution

The fourth proportional to 72,449.56, 99,988.59 and 48,249.19 is: 66,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,449.56 : 99,988.59 = 48,249.19 : x
  2. Step 2: Convert to fraction form
    72,449.56/99,988.59 = 48,249.19/x
  3. Step 3: Cross multiply
    72,449.56x = 99,988.59 × 48,249.19
  4. Step 4: Simplify right side
    72,449.56x = 4,824,368,476.74
  5. Step 5: Solve for x
    x = 4,824,368,476.74/72,449.56
  6. Step 6: Final answer
    x = 66,589.34

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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.