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Finding the Fourth Proportional to 91,572.74, 137,405.94 and 43,595.56

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Solution

The fourth proportional to 91,572.74, 137,405.94 and 43,595.56 is: 65,415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,572.74 : 137,405.94 = 43,595.56 : x
  2. Step 2: Convert to fraction form
    91,572.74/137,405.94 = 43,595.56/x
  3. Step 3: Cross multiply
    91,572.74x = 137,405.94 × 43,595.56
  4. Step 4: Simplify right side
    91,572.74x = 5,990,288,558.11
  5. Step 5: Solve for x
    x = 5,990,288,558.11/91,572.74
  6. Step 6: Final answer
    x = 65,415.63

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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.