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Finding the Fourth Proportional to 7,956.86, 10,980.14 and 4,420.29

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Solution

The fourth proportional to 7,956.86, 10,980.14 and 4,420.29 is: 6,099.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.86 : 10,980.14 = 4,420.29 : x
  2. Step 2: Convert to fraction form
    7,956.86/10,980.14 = 4,420.29/x
  3. Step 3: Cross multiply
    7,956.86x = 10,980.14 × 4,420.29
  4. Step 4: Simplify right side
    7,956.86x = 48,535,380.94
  5. Step 5: Solve for x
    x = 48,535,380.94/7,956.86
  6. Step 6: Final answer
    x = 6,099.82

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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.