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Finding the Fourth Proportional to 69,957.90, 104,967.78 and 36,669.99

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Solution

The fourth proportional to 69,957.90, 104,967.78 and 36,669.99 is: 55,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,957.90 : 104,967.78 = 36,669.99 : x
  2. Step 2: Convert to fraction form
    69,957.90/104,967.78 = 36,669.99/x
  3. Step 3: Cross multiply
    69,957.90x = 104,967.78 × 36,669.99
  4. Step 4: Simplify right side
    69,957.90x = 3,849,167,442.92
  5. Step 5: Solve for x
    x = 3,849,167,442.92/69,957.90
  6. Step 6: Final answer
    x = 55,021.20

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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.