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Finding the Fourth Proportional to 99,479.95, 137,282.31 and 54,767.95

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Solution

The fourth proportional to 99,479.95, 137,282.31 and 54,767.95 is: 75,579.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,479.95 : 137,282.31 = 54,767.95 : x
  2. Step 2: Convert to fraction form
    99,479.95/137,282.31 = 54,767.95/x
  3. Step 3: Cross multiply
    99,479.95x = 137,282.31 × 54,767.95
  4. Step 4: Simplify right side
    99,479.95x = 7,518,670,689.96
  5. Step 5: Solve for x
    x = 7,518,670,689.96/99,479.95
  6. Step 6: Final answer
    x = 75,579.76

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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.