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Finding the Fourth Proportional to 69,101.99, 103,648.89 and 40,654.95

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Solution

The fourth proportional to 69,101.99, 103,648.89 and 40,654.95 is: 60,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,101.99 : 103,648.89 = 40,654.95 : x
  2. Step 2: Convert to fraction form
    69,101.99/103,648.89 = 40,654.95/x
  3. Step 3: Cross multiply
    69,101.99x = 103,648.89 × 40,654.95
  4. Step 4: Simplify right side
    69,101.99x = 4,213,840,089.94
  5. Step 5: Solve for x
    x = 4,213,840,089.94/69,101.99
  6. Step 6: Final answer
    x = 60,980.01

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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.