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Finding the Fourth Proportional to 10,956.76, 15,120.30 and 6,241

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Solution

The fourth proportional to 10,956.76, 15,120.30 and 6,241 is: 8,612.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.76 : 15,120.30 = 6,241 : x
  2. Step 2: Convert to fraction form
    10,956.76/15,120.30 = 6,241/x
  3. Step 3: Cross multiply
    10,956.76x = 15,120.30 × 6,241
  4. Step 4: Simplify right side
    10,956.76x = 94,365,792.30
  5. Step 5: Solve for x
    x = 94,365,792.30/10,956.76
  6. Step 6: Final answer
    x = 8,612.56

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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.