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Finding the Fourth Proportional to 66,580.03, 99,870.42 and 22,206.65

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Solution

The fourth proportional to 66,580.03, 99,870.42 and 22,206.65 is: 33,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580.03 : 99,870.42 = 22,206.65 : x
  2. Step 2: Convert to fraction form
    66,580.03/99,870.42 = 22,206.65/x
  3. Step 3: Cross multiply
    66,580.03x = 99,870.42 × 22,206.65
  4. Step 4: Simplify right side
    66,580.03x = 2,217,787,462.29
  5. Step 5: Solve for x
    x = 2,217,787,462.29/66,580.03
  6. Step 6: Final answer
    x = 33,310.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.