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Finding the Fourth Proportional to 123,700.65, 170,722.98 and 69,273.54

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Solution

The fourth proportional to 123,700.65, 170,722.98 and 69,273.54 is: 95,606.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,700.65 : 170,722.98 = 69,273.54 : x
  2. Step 2: Convert to fraction form
    123,700.65/170,722.98 = 69,273.54/x
  3. Step 3: Cross multiply
    123,700.65x = 170,722.98 × 69,273.54
  4. Step 4: Simplify right side
    123,700.65x = 11,826,585,183.95
  5. Step 5: Solve for x
    x = 11,826,585,183.95/123,700.65
  6. Step 6: Final answer
    x = 95,606.49

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1.5x scale

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.