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Finding the Fourth Proportional to 22,093.20, 33,139.80 and 10,429.20

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Solution

The fourth proportional to 22,093.20, 33,139.80 and 10,429.20 is: 15,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,093.20 : 33,139.80 = 10,429.20 : x
  2. Step 2: Convert to fraction form
    22,093.20/33,139.80 = 10,429.20/x
  3. Step 3: Cross multiply
    22,093.20x = 33,139.80 × 10,429.20
  4. Step 4: Simplify right side
    22,093.20x = 345,621,602.16
  5. Step 5: Solve for x
    x = 345,621,602.16/22,093.20
  6. Step 6: Final answer
    x = 15,643.80

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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.