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Finding the Fourth Proportional to 99,994.38, 137,992.49 and 54,675.28

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Solution

The fourth proportional to 99,994.38, 137,992.49 and 54,675.28 is: 75,452.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,994.38 : 137,992.49 = 54,675.28 : x
  2. Step 2: Convert to fraction form
    99,994.38/137,992.49 = 54,675.28/x
  3. Step 3: Cross multiply
    99,994.38x = 137,992.49 × 54,675.28
  4. Step 4: Simplify right side
    99,994.38x = 7,544,778,028.65
  5. Step 5: Solve for x
    x = 7,544,778,028.65/99,994.38
  6. Step 6: Final answer
    x = 75,452.02

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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.