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Finding the Fourth Proportional to 91,851.93, 137,649.60 and 49,641.03

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Solution

The fourth proportional to 91,851.93, 137,649.60 and 49,641.03 is: 74,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,851.93 : 137,649.60 = 49,641.03 : x
  2. Step 2: Convert to fraction form
    91,851.93/137,649.60 = 49,641.03/x
  3. Step 3: Cross multiply
    91,851.93x = 137,649.60 × 49,641.03
  4. Step 4: Simplify right side
    91,851.93x = 6,833,067,923.09
  5. Step 5: Solve for x
    x = 6,833,067,923.09/91,851.93
  6. Step 6: Final answer
    x = 74,392.21

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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.