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Finding the Fourth Proportional to 7,863.70, 10,852.20 and 4,507.16

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Solution

The fourth proportional to 7,863.70, 10,852.20 and 4,507.16 is: 6,220.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.70 : 10,852.20 = 4,507.16 : x
  2. Step 2: Convert to fraction form
    7,863.70/10,852.20 = 4,507.16/x
  3. Step 3: Cross multiply
    7,863.70x = 10,852.20 × 4,507.16
  4. Step 4: Simplify right side
    7,863.70x = 48,912,618.65
  5. Step 5: Solve for x
    x = 48,912,618.65/7,863.70
  6. Step 6: Final answer
    x = 6,220.05

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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.