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Finding the Fourth Proportional to 8,478.56, 11,701.20 and 4,752.56

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Solution

The fourth proportional to 8,478.56, 11,701.20 and 4,752.56 is: 6,558.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.56 : 11,701.20 = 4,752.56 : x
  2. Step 2: Convert to fraction form
    8,478.56/11,701.20 = 4,752.56/x
  3. Step 3: Cross multiply
    8,478.56x = 11,701.20 × 4,752.56
  4. Step 4: Simplify right side
    8,478.56x = 55,610,655.07
  5. Step 5: Solve for x
    x = 55,610,655.07/8,478.56
  6. Step 6: Final answer
    x = 6,558.97

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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.