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Finding the Fourth Proportional to 47,015.90, 70,478.90 and 17,425.80

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Solution

The fourth proportional to 47,015.90, 70,478.90 and 17,425.80 is: 26,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,015.90 : 70,478.90 = 17,425.80 : x
  2. Step 2: Convert to fraction form
    47,015.90/70,478.90 = 17,425.80/x
  3. Step 3: Cross multiply
    47,015.90x = 70,478.90 × 17,425.80
  4. Step 4: Simplify right side
    47,015.90x = 1,228,151,215.62
  5. Step 5: Solve for x
    x = 1,228,151,215.62/47,015.90
  6. Step 6: Final answer
    x = 26,122.04

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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.