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Finding the Fourth Proportional to 73,872.60, 110,679.30 and 60,653.40

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Solution

The fourth proportional to 73,872.60, 110,679.30 and 60,653.40 is: 90,873.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872.60 : 110,679.30 = 60,653.40 : x
  2. Step 2: Convert to fraction form
    73,872.60/110,679.30 = 60,653.40/x
  3. Step 3: Cross multiply
    73,872.60x = 110,679.30 × 60,653.40
  4. Step 4: Simplify right side
    73,872.60x = 6,713,075,854.62
  5. Step 5: Solve for x
    x = 6,713,075,854.62/73,872.60
  6. Step 6: Final answer
    x = 90,873.69

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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.