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Finding the Fourth Proportional to 7,607.60, 10,508.56 and 6,121.08

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Solution

The fourth proportional to 7,607.60, 10,508.56 and 6,121.08 is: 8,455.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,607.60 : 10,508.56 = 6,121.08 : x
  2. Step 2: Convert to fraction form
    7,607.60/10,508.56 = 6,121.08/x
  3. Step 3: Cross multiply
    7,607.60x = 10,508.56 × 6,121.08
  4. Step 4: Simplify right side
    7,607.60x = 64,323,736.44
  5. Step 5: Solve for x
    x = 64,323,736.44/7,607.60
  6. Step 6: Final answer
    x = 8,455.19

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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.