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Finding the Fourth Proportional to 48,991.68, 73,487.36 and 13,931.84

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Solution

The fourth proportional to 48,991.68, 73,487.36 and 13,931.84 is: 20,897.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,991.68 : 73,487.36 = 13,931.84 : x
  2. Step 2: Convert to fraction form
    48,991.68/73,487.36 = 13,931.84/x
  3. Step 3: Cross multiply
    48,991.68x = 73,487.36 × 13,931.84
  4. Step 4: Simplify right side
    48,991.68x = 1,023,814,141.54
  5. Step 5: Solve for x
    x = 1,023,814,141.54/48,991.68
  6. Step 6: Final answer
    x = 20,897.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.