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Finding the Fourth Proportional to 26,358.40, 39,524.80 and 14,659.20

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Solution

The fourth proportional to 26,358.40, 39,524.80 and 14,659.20 is: 21,981.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,358.40 : 39,524.80 = 14,659.20 : x
  2. Step 2: Convert to fraction form
    26,358.40/39,524.80 = 14,659.20/x
  3. Step 3: Cross multiply
    26,358.40x = 39,524.80 × 14,659.20
  4. Step 4: Simplify right side
    26,358.40x = 579,401,948.16
  5. Step 5: Solve for x
    x = 579,401,948.16/26,358.40
  6. Step 6: Final answer
    x = 21,981.68

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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.