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Finding the Fourth Proportional to 91,761.52, 137,482.86 and 49,670.62

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Solution

The fourth proportional to 91,761.52, 137,482.86 and 49,670.62 is: 74,419.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,761.52 : 137,482.86 = 49,670.62 : x
  2. Step 2: Convert to fraction form
    91,761.52/137,482.86 = 49,670.62/x
  3. Step 3: Cross multiply
    91,761.52x = 137,482.86 × 49,670.62
  4. Step 4: Simplify right side
    91,761.52x = 6,828,858,895.57
  5. Step 5: Solve for x
    x = 6,828,858,895.57/91,761.52
  6. Step 6: Final answer
    x = 74,419.64

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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.