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Finding the Fourth Proportional to 47,321.70, 70,982.55 and 14,046.90

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Solution

The fourth proportional to 47,321.70, 70,982.55 and 14,046.90 is: 21,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,321.70 : 70,982.55 = 14,046.90 : x
  2. Step 2: Convert to fraction form
    47,321.70/70,982.55 = 14,046.90/x
  3. Step 3: Cross multiply
    47,321.70x = 70,982.55 × 14,046.90
  4. Step 4: Simplify right side
    47,321.70x = 997,084,781.60
  5. Step 5: Solve for x
    x = 997,084,781.60/47,321.70
  6. Step 6: Final answer
    x = 21,070.35

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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.