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Finding the Fourth Proportional to 7,718.64, 10,652.25 and 4,694.94

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Solution

The fourth proportional to 7,718.64, 10,652.25 and 4,694.94 is: 6,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.64 : 10,652.25 = 4,694.94 : x
  2. Step 2: Convert to fraction form
    7,718.64/10,652.25 = 4,694.94/x
  3. Step 3: Cross multiply
    7,718.64x = 10,652.25 × 4,694.94
  4. Step 4: Simplify right side
    7,718.64x = 50,011,681.43
  5. Step 5: Solve for x
    x = 50,011,681.43/7,718.64
  6. Step 6: Final answer
    x = 6,479.34

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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.