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Finding the Fourth Proportional to 139,000.96, 191,816.16 and 75,337.36

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Solution

The fourth proportional to 139,000.96, 191,816.16 and 75,337.36 is: 103,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,000.96 : 191,816.16 = 75,337.36 : x
  2. Step 2: Convert to fraction form
    139,000.96/191,816.16 = 75,337.36/x
  3. Step 3: Cross multiply
    139,000.96x = 191,816.16 × 75,337.36
  4. Step 4: Simplify right side
    139,000.96x = 14,450,923,099.74
  5. Step 5: Solve for x
    x = 14,450,923,099.74/139,000.96
  6. Step 6: Final answer
    x = 103,962.76

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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.