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Finding the Fourth Proportional to 22,674.70, 31,289.70 and 12,602.80

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Solution

The fourth proportional to 22,674.70, 31,289.70 and 12,602.80 is: 17,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,674.70 : 31,289.70 = 12,602.80 : x
  2. Step 2: Convert to fraction form
    22,674.70/31,289.70 = 12,602.80/x
  3. Step 3: Cross multiply
    22,674.70x = 31,289.70 × 12,602.80
  4. Step 4: Simplify right side
    22,674.70x = 394,337,917.53
  5. Step 5: Solve for x
    x = 394,337,917.53/22,674.70
  6. Step 6: Final answer
    x = 17,391.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.