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Finding the Fourth Proportional to 8,781.95, 12,118.82 and 4,803.03

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Solution

The fourth proportional to 8,781.95, 12,118.82 and 4,803.03 is: 6,628.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.95 : 12,118.82 = 4,803.03 : x
  2. Step 2: Convert to fraction form
    8,781.95/12,118.82 = 4,803.03/x
  3. Step 3: Cross multiply
    8,781.95x = 12,118.82 × 4,803.03
  4. Step 4: Simplify right side
    8,781.95x = 58,207,032.01
  5. Step 5: Solve for x
    x = 58,207,032.01/8,781.95
  6. Step 6: Final answer
    x = 6,628.03

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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.