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Finding the Fourth Proportional to 70,612.01, 105,932.60 and 20,693.73

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Solution

The fourth proportional to 70,612.01, 105,932.60 and 20,693.73 is: 31,044.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,612.01 : 105,932.60 = 20,693.73 : x
  2. Step 2: Convert to fraction form
    70,612.01/105,932.60 = 20,693.73/x
  3. Step 3: Cross multiply
    70,612.01x = 105,932.60 × 20,693.73
  4. Step 4: Simplify right side
    70,612.01x = 2,192,140,519.13
  5. Step 5: Solve for x
    x = 2,192,140,519.13/70,612.01
  6. Step 6: Final answer
    x = 31,044.87

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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.