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Finding the Fourth Proportional to 15,223.40, 22,856.70 and 9,391.40

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Solution

The fourth proportional to 15,223.40, 22,856.70 and 9,391.40 is: 14,100.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.40 : 22,856.70 = 9,391.40 : x
  2. Step 2: Convert to fraction form
    15,223.40/22,856.70 = 9,391.40/x
  3. Step 3: Cross multiply
    15,223.40x = 22,856.70 × 9,391.40
  4. Step 4: Simplify right side
    15,223.40x = 214,656,412.38
  5. Step 5: Solve for x
    x = 214,656,412.38/15,223.40
  6. Step 6: Final answer
    x = 14,100.43

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1.5x scale

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.