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Finding the Fourth Proportional to 75,893.49, 113,663.13 and 59,991.78

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Solution

The fourth proportional to 75,893.49, 113,663.13 and 59,991.78 is: 89,847.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,893.49 : 113,663.13 = 59,991.78 : x
  2. Step 2: Convert to fraction form
    75,893.49/113,663.13 = 59,991.78/x
  3. Step 3: Cross multiply
    75,893.49x = 113,663.13 × 59,991.78
  4. Step 4: Simplify right side
    75,893.49x = 6,818,853,489.07
  5. Step 5: Solve for x
    x = 6,818,853,489.07/75,893.49
  6. Step 6: Final answer
    x = 89,847.67

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1.5x scale

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.