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Finding the Fourth Proportional to 91,572.54, 137,409.84 and 49,451.76

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Solution

The fourth proportional to 91,572.54, 137,409.84 and 49,451.76 is: 74,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,572.54 : 137,409.84 = 49,451.76 : x
  2. Step 2: Convert to fraction form
    91,572.54/137,409.84 = 49,451.76/x
  3. Step 3: Cross multiply
    91,572.54x = 137,409.84 × 49,451.76
  4. Step 4: Simplify right side
    91,572.54x = 6,795,158,429.32
  5. Step 5: Solve for x
    x = 6,795,158,429.32/91,572.54
  6. Step 6: Final answer
    x = 74,205.20

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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.