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Finding the Fourth Proportional to 55,438.59, 83,171.70 and 15,995.70

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Solution

The fourth proportional to 55,438.59, 83,171.70 and 15,995.70 is: 23,997.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,438.59 : 83,171.70 = 15,995.70 : x
  2. Step 2: Convert to fraction form
    55,438.59/83,171.70 = 15,995.70/x
  3. Step 3: Cross multiply
    55,438.59x = 83,171.70 × 15,995.70
  4. Step 4: Simplify right side
    55,438.59x = 1,330,389,561.69
  5. Step 5: Solve for x
    x = 1,330,389,561.69/55,438.59
  6. Step 6: Final answer
    x = 23,997.54

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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.