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Finding the Fourth Proportional to 89,313.68, 133,904.72 and 42,599.36

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Solution

The fourth proportional to 89,313.68, 133,904.72 and 42,599.36 is: 63,867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,313.68 : 133,904.72 = 42,599.36 : x
  2. Step 2: Convert to fraction form
    89,313.68/133,904.72 = 42,599.36/x
  3. Step 3: Cross multiply
    89,313.68x = 133,904.72 × 42,599.36
  4. Step 4: Simplify right side
    89,313.68x = 5,704,255,372.98
  5. Step 5: Solve for x
    x = 5,704,255,372.98/89,313.68
  6. Step 6: Final answer
    x = 63,867.66

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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.