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Finding the Fourth Proportional to 55,392.71, 83,100.02 and 20,332.67

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Solution

The fourth proportional to 55,392.71, 83,100.02 and 20,332.67 is: 30,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,392.71 : 83,100.02 = 20,332.67 : x
  2. Step 2: Convert to fraction form
    55,392.71/83,100.02 = 20,332.67/x
  3. Step 3: Cross multiply
    55,392.71x = 83,100.02 × 20,332.67
  4. Step 4: Simplify right side
    55,392.71x = 1,689,644,766.49
  5. Step 5: Solve for x
    x = 1,689,644,766.49/55,392.71
  6. Step 6: Final answer
    x = 30,503.02

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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.