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Finding the Fourth Proportional to 47,212.80, 70,819.20 and 44,102.40

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Solution

The fourth proportional to 47,212.80, 70,819.20 and 44,102.40 is: 66,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,212.80 : 70,819.20 = 44,102.40 : x
  2. Step 2: Convert to fraction form
    47,212.80/70,819.20 = 44,102.40/x
  3. Step 3: Cross multiply
    47,212.80x = 70,819.20 × 44,102.40
  4. Step 4: Simplify right side
    47,212.80x = 3,123,296,686.08
  5. Step 5: Solve for x
    x = 3,123,296,686.08/47,212.80
  6. Step 6: Final answer
    x = 66,153.60

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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.