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Finding the Fourth Proportional to 8,593.80, 11,859.12 and 5,008.40

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Solution

The fourth proportional to 8,593.80, 11,859.12 and 5,008.40 is: 6,911.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,593.80 : 11,859.12 = 5,008.40 : x
  2. Step 2: Convert to fraction form
    8,593.80/11,859.12 = 5,008.40/x
  3. Step 3: Cross multiply
    8,593.80x = 11,859.12 × 5,008.40
  4. Step 4: Simplify right side
    8,593.80x = 59,395,216.61
  5. Step 5: Solve for x
    x = 59,395,216.61/8,593.80
  6. Step 6: Final answer
    x = 6,911.40

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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.