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Finding the Fourth Proportional to 7,700.61, 10,628.49 and 4,866.18

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Solution

The fourth proportional to 7,700.61, 10,628.49 and 4,866.18 is: 6,716.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,700.61 : 10,628.49 = 4,866.18 : x
  2. Step 2: Convert to fraction form
    7,700.61/10,628.49 = 4,866.18/x
  3. Step 3: Cross multiply
    7,700.61x = 10,628.49 × 4,866.18
  4. Step 4: Simplify right side
    7,700.61x = 51,720,121.14
  5. Step 5: Solve for x
    x = 51,720,121.14/7,700.61
  6. Step 6: Final answer
    x = 6,716.37

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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.