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Finding the Fourth Proportional to 69,523.50, 103,390.88 and 67,309.20

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Solution

The fourth proportional to 69,523.50, 103,390.88 and 67,309.20 is: 100,097.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,523.50 : 103,390.88 = 67,309.20 : x
  2. Step 2: Convert to fraction form
    69,523.50/103,390.88 = 67,309.20/x
  3. Step 3: Cross multiply
    69,523.50x = 103,390.88 × 67,309.20
  4. Step 4: Simplify right side
    69,523.50x = 6,959,157,083.55
  5. Step 5: Solve for x
    x = 6,959,157,083.55/69,523.50
  6. Step 6: Final answer
    x = 100,097.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.