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Finding the Fourth Proportional to 79,564.71, 119,338.11 and 20,401.77

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Solution

The fourth proportional to 79,564.71, 119,338.11 and 20,401.77 is: 30,600.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,564.71 : 119,338.11 = 20,401.77 : x
  2. Step 2: Convert to fraction form
    79,564.71/119,338.11 = 20,401.77/x
  3. Step 3: Cross multiply
    79,564.71x = 119,338.11 × 20,401.77
  4. Step 4: Simplify right side
    79,564.71x = 2,434,708,672.45
  5. Step 5: Solve for x
    x = 2,434,708,672.45/79,564.71
  6. Step 6: Final answer
    x = 30,600.36

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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.