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Finding the Fourth Proportional to 100,786.80, 151,034.40 and 44,580.90

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Solution

The fourth proportional to 100,786.80, 151,034.40 and 44,580.90 is: 66,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,786.80 : 151,034.40 = 44,580.90 : x
  2. Step 2: Convert to fraction form
    100,786.80/151,034.40 = 44,580.90/x
  3. Step 3: Cross multiply
    100,786.80x = 151,034.40 × 44,580.90
  4. Step 4: Simplify right side
    100,786.80x = 6,733,249,482.96
  5. Step 5: Solve for x
    x = 6,733,249,482.96/100,786.80
  6. Step 6: Final answer
    x = 66,806.86

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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.