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Finding the Fourth Proportional to 15,912.56, 23,875.06 and 7,145.48

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Solution

The fourth proportional to 15,912.56, 23,875.06 and 7,145.48 is: 10,721.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.56 : 23,875.06 = 7,145.48 : x
  2. Step 2: Convert to fraction form
    15,912.56/23,875.06 = 7,145.48/x
  3. Step 3: Cross multiply
    15,912.56x = 23,875.06 × 7,145.48
  4. Step 4: Simplify right side
    15,912.56x = 170,598,763.73
  5. Step 5: Solve for x
    x = 170,598,763.73/15,912.56
  6. Step 6: Final answer
    x = 10,721.01

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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.