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Finding the Fourth Proportional to 22,986.70, 34,480.05 and 9,135.70

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Solution

The fourth proportional to 22,986.70, 34,480.05 and 9,135.70 is: 13,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,986.70 : 34,480.05 = 9,135.70 : x
  2. Step 2: Convert to fraction form
    22,986.70/34,480.05 = 9,135.70/x
  3. Step 3: Cross multiply
    22,986.70x = 34,480.05 × 9,135.70
  4. Step 4: Simplify right side
    22,986.70x = 314,999,392.79
  5. Step 5: Solve for x
    x = 314,999,392.79/22,986.70
  6. Step 6: Final answer
    x = 13,703.55

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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.