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Finding the Fourth Proportional to 69,257.65, 103,627.28 and 45,929.65

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Solution

The fourth proportional to 69,257.65, 103,627.28 and 45,929.65 is: 68,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,257.65 : 103,627.28 = 45,929.65 : x
  2. Step 2: Convert to fraction form
    69,257.65/103,627.28 = 45,929.65/x
  3. Step 3: Cross multiply
    69,257.65x = 103,627.28 × 45,929.65
  4. Step 4: Simplify right side
    69,257.65x = 4,759,564,471.20
  5. Step 5: Solve for x
    x = 4,759,564,471.20/69,257.65
  6. Step 6: Final answer
    x = 68,722.58

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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.