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Finding the Fourth Proportional to 7,865.88, 10,859.82 and 4,884.84

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Solution

The fourth proportional to 7,865.88, 10,859.82 and 4,884.84 is: 6,744.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.88 : 10,859.82 = 4,884.84 : x
  2. Step 2: Convert to fraction form
    7,865.88/10,859.82 = 4,884.84/x
  3. Step 3: Cross multiply
    7,865.88x = 10,859.82 × 4,884.84
  4. Step 4: Simplify right side
    7,865.88x = 53,048,483.13
  5. Step 5: Solve for x
    x = 53,048,483.13/7,865.88
  6. Step 6: Final answer
    x = 6,744.13

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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.