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Finding the Fourth Proportional to 70,187.88, 96,859.32 and 38,356.78

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Solution

The fourth proportional to 70,187.88, 96,859.32 and 38,356.78 is: 52,932.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,187.88 : 96,859.32 = 38,356.78 : x
  2. Step 2: Convert to fraction form
    70,187.88/96,859.32 = 38,356.78/x
  3. Step 3: Cross multiply
    70,187.88x = 96,859.32 × 38,356.78
  4. Step 4: Simplify right side
    70,187.88x = 3,715,211,423.81
  5. Step 5: Solve for x
    x = 3,715,211,423.81/70,187.88
  6. Step 6: Final answer
    x = 52,932.38

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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.