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Finding the Fourth Proportional to 8,811.79, 12,159.99 and 4,832.83

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Solution

The fourth proportional to 8,811.79, 12,159.99 and 4,832.83 is: 6,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.79 : 12,159.99 = 4,832.83 : x
  2. Step 2: Convert to fraction form
    8,811.79/12,159.99 = 4,832.83/x
  3. Step 3: Cross multiply
    8,811.79x = 12,159.99 × 4,832.83
  4. Step 4: Simplify right side
    8,811.79x = 58,767,164.47
  5. Step 5: Solve for x
    x = 58,767,164.47/8,811.79
  6. Step 6: Final answer
    x = 6,669.15

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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.