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Finding the Fourth Proportional to 62,486.70, 93,730.05 and 20,933.70

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Solution

The fourth proportional to 62,486.70, 93,730.05 and 20,933.70 is: 31,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,486.70 : 93,730.05 = 20,933.70 : x
  2. Step 2: Convert to fraction form
    62,486.70/93,730.05 = 20,933.70/x
  3. Step 3: Cross multiply
    62,486.70x = 93,730.05 × 20,933.70
  4. Step 4: Simplify right side
    62,486.70x = 1,962,116,747.69
  5. Step 5: Solve for x
    x = 1,962,116,747.69/62,486.70
  6. Step 6: Final answer
    x = 31,400.55

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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.