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Finding the Fourth Proportional to 25,224.31, 34,808.74 and 15,015.31

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Solution

The fourth proportional to 25,224.31, 34,808.74 and 15,015.31 is: 20,720.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,224.31 : 34,808.74 = 15,015.31 : x
  2. Step 2: Convert to fraction form
    25,224.31/34,808.74 = 15,015.31/x
  3. Step 3: Cross multiply
    25,224.31x = 34,808.74 × 15,015.31
  4. Step 4: Simplify right side
    25,224.31x = 522,663,897.25
  5. Step 5: Solve for x
    x = 522,663,897.25/25,224.31
  6. Step 6: Final answer
    x = 20,720.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.