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Finding the Fourth Proportional to 70,175.54, 96,831.04 and 39,961.46

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Solution

The fourth proportional to 70,175.54, 96,831.04 and 39,961.46 is: 55,140.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,175.54 : 96,831.04 = 39,961.46 : x
  2. Step 2: Convert to fraction form
    70,175.54/96,831.04 = 39,961.46/x
  3. Step 3: Cross multiply
    70,175.54x = 96,831.04 × 39,961.46
  4. Step 4: Simplify right side
    70,175.54x = 3,869,509,731.72
  5. Step 5: Solve for x
    x = 3,869,509,731.72/70,175.54
  6. Step 6: Final answer
    x = 55,140.43

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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.