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Finding the Fourth Proportional to 73,998.90, 110,998.35 and 54,315.90

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Solution

The fourth proportional to 73,998.90, 110,998.35 and 54,315.90 is: 81,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,998.90 : 110,998.35 = 54,315.90 : x
  2. Step 2: Convert to fraction form
    73,998.90/110,998.35 = 54,315.90/x
  3. Step 3: Cross multiply
    73,998.90x = 110,998.35 × 54,315.90
  4. Step 4: Simplify right side
    73,998.90x = 6,028,975,278.77
  5. Step 5: Solve for x
    x = 6,028,975,278.77/73,998.90
  6. Step 6: Final answer
    x = 81,473.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.