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Finding the Fourth Proportional to 25,820.70, 38,719.53 and 7,348.38

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Solution

The fourth proportional to 25,820.70, 38,719.53 and 7,348.38 is: 11,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,820.70 : 38,719.53 = 7,348.38 : x
  2. Step 2: Convert to fraction form
    25,820.70/38,719.53 = 7,348.38/x
  3. Step 3: Cross multiply
    25,820.70x = 38,719.53 × 7,348.38
  4. Step 4: Simplify right side
    25,820.70x = 284,525,819.86
  5. Step 5: Solve for x
    x = 284,525,819.86/25,820.70
  6. Step 6: Final answer
    x = 11,019.29

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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.