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Finding the Fourth Proportional to 7,481.68, 10,317.72 and 5,913.52

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Solution

The fourth proportional to 7,481.68, 10,317.72 and 5,913.52 is: 8,155.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.68 : 10,317.72 = 5,913.52 : x
  2. Step 2: Convert to fraction form
    7,481.68/10,317.72 = 5,913.52/x
  3. Step 3: Cross multiply
    7,481.68x = 10,317.72 × 5,913.52
  4. Step 4: Simplify right side
    7,481.68x = 61,014,043.57
  5. Step 5: Solve for x
    x = 61,014,043.57/7,481.68
  6. Step 6: Final answer
    x = 8,155.13

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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.