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Finding the Fourth Proportional to 139,997.95, 193,197.36 and 76,335.74

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Solution

The fourth proportional to 139,997.95, 193,197.36 and 76,335.74 is: 105,343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,997.95 : 193,197.36 = 76,335.74 : x
  2. Step 2: Convert to fraction form
    139,997.95/193,197.36 = 76,335.74/x
  3. Step 3: Cross multiply
    139,997.95x = 193,197.36 × 76,335.74
  4. Step 4: Simplify right side
    139,997.95x = 14,747,863,441.65
  5. Step 5: Solve for x
    x = 14,747,863,441.65/139,997.95
  6. Step 6: Final answer
    x = 105,343.42

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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.