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Finding the Fourth Proportional to 70,166.90, 96,831.69 and 38,337.80

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Solution

The fourth proportional to 70,166.90, 96,831.69 and 38,337.80 is: 52,906.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,166.90 : 96,831.69 = 38,337.80 : x
  2. Step 2: Convert to fraction form
    70,166.90/96,831.69 = 38,337.80/x
  3. Step 3: Cross multiply
    70,166.90x = 96,831.69 × 38,337.80
  4. Step 4: Simplify right side
    70,166.90x = 3,712,313,964.88
  5. Step 5: Solve for x
    x = 3,712,313,964.88/70,166.90
  6. Step 6: Final answer
    x = 52,906.91

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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.