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Finding the Fourth Proportional to 89,647.56, 134,309.12 and 64,551.74

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Solution

The fourth proportional to 89,647.56, 134,309.12 and 64,551.74 is: 96,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,647.56 : 134,309.12 = 64,551.74 : x
  2. Step 2: Convert to fraction form
    89,647.56/134,309.12 = 64,551.74/x
  3. Step 3: Cross multiply
    89,647.56x = 134,309.12 × 64,551.74
  4. Step 4: Simplify right side
    89,647.56x = 8,669,886,399.56
  5. Step 5: Solve for x
    x = 8,669,886,399.56/89,647.56
  6. Step 6: Final answer
    x = 96,710.79

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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.