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Finding the Fourth Proportional to 69,642.80, 104,464.20 and 62,061.20

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Solution

The fourth proportional to 69,642.80, 104,464.20 and 62,061.20 is: 93,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,642.80 : 104,464.20 = 62,061.20 : x
  2. Step 2: Convert to fraction form
    69,642.80/104,464.20 = 62,061.20/x
  3. Step 3: Cross multiply
    69,642.80x = 104,464.20 × 62,061.20
  4. Step 4: Simplify right side
    69,642.80x = 6,483,173,609.04
  5. Step 5: Solve for x
    x = 6,483,173,609.04/69,642.80
  6. Step 6: Final answer
    x = 93,091.80

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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.