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Finding the Fourth Proportional to 100,521.44, 150,737.87 and 47,228.55

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Solution

The fourth proportional to 100,521.44, 150,737.87 and 47,228.55 is: 70,822.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,521.44 : 150,737.87 = 47,228.55 : x
  2. Step 2: Convert to fraction form
    100,521.44/150,737.87 = 47,228.55/x
  3. Step 3: Cross multiply
    100,521.44x = 150,737.87 × 47,228.55
  4. Step 4: Simplify right side
    100,521.44x = 7,119,130,794.05
  5. Step 5: Solve for x
    x = 7,119,130,794.05/100,521.44
  6. Step 6: Final answer
    x = 70,822.02

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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.