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Finding the Fourth Proportional to 8,542.20, 11,788.08 and 4,816.20

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Solution

The fourth proportional to 8,542.20, 11,788.08 and 4,816.20 is: 6,646.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,542.20 : 11,788.08 = 4,816.20 : x
  2. Step 2: Convert to fraction form
    8,542.20/11,788.08 = 4,816.20/x
  3. Step 3: Cross multiply
    8,542.20x = 11,788.08 × 4,816.20
  4. Step 4: Simplify right side
    8,542.20x = 56,773,750.90
  5. Step 5: Solve for x
    x = 56,773,750.90/8,542.20
  6. Step 6: Final answer
    x = 6,646.27

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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.