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Finding the Fourth Proportional to 70,237.90, 96,929.67 and 38,408.86

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Solution

The fourth proportional to 70,237.90, 96,929.67 and 38,408.86 is: 53,004.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.90 : 96,929.67 = 38,408.86 : x
  2. Step 2: Convert to fraction form
    70,237.90/96,929.67 = 38,408.86/x
  3. Step 3: Cross multiply
    70,237.90x = 96,929.67 × 38,408.86
  4. Step 4: Simplify right side
    70,237.90x = 3,722,958,124.88
  5. Step 5: Solve for x
    x = 3,722,958,124.88/70,237.90
  6. Step 6: Final answer
    x = 53,004.97

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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.