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Finding the Fourth Proportional to 95,718.40, 143,318.40 and 74,982.40

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Solution

The fourth proportional to 95,718.40, 143,318.40 and 74,982.40 is: 112,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,718.40 : 143,318.40 = 74,982.40 : x
  2. Step 2: Convert to fraction form
    95,718.40/143,318.40 = 74,982.40/x
  3. Step 3: Cross multiply
    95,718.40x = 143,318.40 × 74,982.40
  4. Step 4: Simplify right side
    95,718.40x = 10,746,357,596.16
  5. Step 5: Solve for x
    x = 10,746,357,596.16/95,718.40
  6. Step 6: Final answer
    x = 112,270.55

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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.