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Finding the Fourth Proportional to 7,615.76, 10,510.15 and 4,591.85

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Solution

The fourth proportional to 7,615.76, 10,510.15 and 4,591.85 is: 6,336.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.76 : 10,510.15 = 4,591.85 : x
  2. Step 2: Convert to fraction form
    7,615.76/10,510.15 = 4,591.85/x
  3. Step 3: Cross multiply
    7,615.76x = 10,510.15 × 4,591.85
  4. Step 4: Simplify right side
    7,615.76x = 48,260,979.73
  5. Step 5: Solve for x
    x = 48,260,979.73/7,615.76
  6. Step 6: Final answer
    x = 6,336.99

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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.