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Finding the Fourth Proportional to 22,809.80, 34,214.70 and 10,521.80

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Solution

The fourth proportional to 22,809.80, 34,214.70 and 10,521.80 is: 15,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,809.80 : 34,214.70 = 10,521.80 : x
  2. Step 2: Convert to fraction form
    22,809.80/34,214.70 = 10,521.80/x
  3. Step 3: Cross multiply
    22,809.80x = 34,214.70 × 10,521.80
  4. Step 4: Simplify right side
    22,809.80x = 360,000,230.46
  5. Step 5: Solve for x
    x = 360,000,230.46/22,809.80
  6. Step 6: Final answer
    x = 15,782.70

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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.