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Finding the Fourth Proportional to 28,236.70, 42,358.97 and 9,522.10

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Solution

The fourth proportional to 28,236.70, 42,358.97 and 9,522.10 is: 14,284.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.70 : 42,358.97 = 9,522.10 : x
  2. Step 2: Convert to fraction form
    28,236.70/42,358.97 = 9,522.10/x
  3. Step 3: Cross multiply
    28,236.70x = 42,358.97 × 9,522.10
  4. Step 4: Simplify right side
    28,236.70x = 403,346,300.63
  5. Step 5: Solve for x
    x = 403,346,300.63/28,236.70
  6. Step 6: Final answer
    x = 14,284.47

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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.