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Finding the Fourth Proportional to 69,092.90, 103,700.10 and 40,977.80

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Solution

The fourth proportional to 69,092.90, 103,700.10 and 40,977.80 is: 61,502.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,092.90 : 103,700.10 = 40,977.80 : x
  2. Step 2: Convert to fraction form
    69,092.90/103,700.10 = 40,977.80/x
  3. Step 3: Cross multiply
    69,092.90x = 103,700.10 × 40,977.80
  4. Step 4: Simplify right side
    69,092.90x = 4,249,401,957.78
  5. Step 5: Solve for x
    x = 4,249,401,957.78/69,092.90
  6. Step 6: Final answer
    x = 61,502.73

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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.