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Finding the Fourth Proportional to 62,242.50, 93,363.78 and 20,689.50

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Solution

The fourth proportional to 62,242.50, 93,363.78 and 20,689.50 is: 31,034.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,242.50 : 93,363.78 = 20,689.50 : x
  2. Step 2: Convert to fraction form
    62,242.50/93,363.78 = 20,689.50/x
  3. Step 3: Cross multiply
    62,242.50x = 93,363.78 × 20,689.50
  4. Step 4: Simplify right side
    62,242.50x = 1,931,649,926.31
  5. Step 5: Solve for x
    x = 1,931,649,926.31/62,242.50
  6. Step 6: Final answer
    x = 31,034.26

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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.