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Finding the Fourth Proportional to 7,718.82, 10,652.20 and 4,361.70

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Solution

The fourth proportional to 7,718.82, 10,652.20 and 4,361.70 is: 6,019.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.82 : 10,652.20 = 4,361.70 : x
  2. Step 2: Convert to fraction form
    7,718.82/10,652.20 = 4,361.70/x
  3. Step 3: Cross multiply
    7,718.82x = 10,652.20 × 4,361.70
  4. Step 4: Simplify right side
    7,718.82x = 46,461,700.74
  5. Step 5: Solve for x
    x = 46,461,700.74/7,718.82
  6. Step 6: Final answer
    x = 6,019.28

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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.