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Finding the Fourth Proportional to 62,686.56, 94,038.79 and 20,569.94

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Solution

The fourth proportional to 62,686.56, 94,038.79 and 20,569.94 is: 30,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,686.56 : 94,038.79 = 20,569.94 : x
  2. Step 2: Convert to fraction form
    62,686.56/94,038.79 = 20,569.94/x
  3. Step 3: Cross multiply
    62,686.56x = 94,038.79 × 20,569.94
  4. Step 4: Simplify right side
    62,686.56x = 1,934,372,267.97
  5. Step 5: Solve for x
    x = 1,934,372,267.97/62,686.56
  6. Step 6: Final answer
    x = 30,857.85

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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.