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Finding the Fourth Proportional to 7,246.64, 9,990.60 and 4,723.76

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Solution

The fourth proportional to 7,246.64, 9,990.60 and 4,723.76 is: 6,512.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,246.64 : 9,990.60 = 4,723.76 : x
  2. Step 2: Convert to fraction form
    7,246.64/9,990.60 = 4,723.76/x
  3. Step 3: Cross multiply
    7,246.64x = 9,990.60 × 4,723.76
  4. Step 4: Simplify right side
    7,246.64x = 47,193,196.66
  5. Step 5: Solve for x
    x = 47,193,196.66/7,246.64
  6. Step 6: Final answer
    x = 6,512.42

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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.