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Finding the Fourth Proportional to 73,123.80, 109,728.90 and 48,235.80

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Solution

The fourth proportional to 73,123.80, 109,728.90 and 48,235.80 is: 72,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,123.80 : 109,728.90 = 48,235.80 : x
  2. Step 2: Convert to fraction form
    73,123.80/109,728.90 = 48,235.80/x
  3. Step 3: Cross multiply
    73,123.80x = 109,728.90 × 48,235.80
  4. Step 4: Simplify right side
    73,123.80x = 5,292,861,274.62
  5. Step 5: Solve for x
    x = 5,292,861,274.62/73,123.80
  6. Step 6: Final answer
    x = 72,382.20

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1.5x scale

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.