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Finding the Fourth Proportional to 91,057.20, 136,585.80 and 49,066.80

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Solution

The fourth proportional to 91,057.20, 136,585.80 and 49,066.80 is: 73,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,057.20 : 136,585.80 = 49,066.80 : x
  2. Step 2: Convert to fraction form
    91,057.20/136,585.80 = 49,066.80/x
  3. Step 3: Cross multiply
    91,057.20x = 136,585.80 × 49,066.80
  4. Step 4: Simplify right side
    91,057.20x = 6,701,828,131.44
  5. Step 5: Solve for x
    x = 6,701,828,131.44/91,057.20
  6. Step 6: Final answer
    x = 73,600.20

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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.