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Finding the Fourth Proportional to 70,020.86, 96,627.74 and 38,189.75

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Solution

The fourth proportional to 70,020.86, 96,627.74 and 38,189.75 is: 52,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,020.86 : 96,627.74 = 38,189.75 : x
  2. Step 2: Convert to fraction form
    70,020.86/96,627.74 = 38,189.75/x
  3. Step 3: Cross multiply
    70,020.86x = 96,627.74 × 38,189.75
  4. Step 4: Simplify right side
    70,020.86x = 3,690,188,559.58
  5. Step 5: Solve for x
    x = 3,690,188,559.58/70,020.86
  6. Step 6: Final answer
    x = 52,701.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.