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Finding the Fourth Proportional to 8,808.63, 12,155.80 and 4,829.65

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Solution

The fourth proportional to 8,808.63, 12,155.80 and 4,829.65 is: 6,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.63 : 12,155.80 = 4,829.65 : x
  2. Step 2: Convert to fraction form
    8,808.63/12,155.80 = 4,829.65/x
  3. Step 3: Cross multiply
    8,808.63x = 12,155.80 × 4,829.65
  4. Step 4: Simplify right side
    8,808.63x = 58,708,259.47
  5. Step 5: Solve for x
    x = 58,708,259.47/8,808.63
  6. Step 6: Final answer
    x = 6,664.86

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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.