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Finding the Fourth Proportional to 8,809.80, 12,157.53 and 4,830.83

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Solution

The fourth proportional to 8,809.80, 12,157.53 and 4,830.83 is: 6,666.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.80 : 12,157.53 = 4,830.83 : x
  2. Step 2: Convert to fraction form
    8,809.80/12,157.53 = 4,830.83/x
  3. Step 3: Cross multiply
    8,809.80x = 12,157.53 × 4,830.83
  4. Step 4: Simplify right side
    8,809.80x = 58,730,960.65
  5. Step 5: Solve for x
    x = 58,730,960.65/8,809.80
  6. Step 6: Final answer
    x = 6,666.55

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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.