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Finding the Fourth Proportional to 62,775.89, 94,153.42 and 20,656.49

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Solution

The fourth proportional to 62,775.89, 94,153.42 and 20,656.49 is: 30,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,775.89 : 94,153.42 = 20,656.49 : x
  2. Step 2: Convert to fraction form
    62,775.89/94,153.42 = 20,656.49/x
  3. Step 3: Cross multiply
    62,775.89x = 94,153.42 × 20,656.49
  4. Step 4: Simplify right side
    62,775.89x = 1,944,879,178.70
  5. Step 5: Solve for x
    x = 1,944,879,178.70/62,775.89
  6. Step 6: Final answer
    x = 30,981.31

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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.