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Finding the Fourth Proportional to 89,720.79, 134,581.16 and 26,535.98

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Solution

The fourth proportional to 89,720.79, 134,581.16 and 26,535.98 is: 39,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.79 : 134,581.16 = 26,535.98 : x
  2. Step 2: Convert to fraction form
    89,720.79/134,581.16 = 26,535.98/x
  3. Step 3: Cross multiply
    89,720.79x = 134,581.16 × 26,535.98
  4. Step 4: Simplify right side
    89,720.79x = 3,571,243,306.59
  5. Step 5: Solve for x
    x = 3,571,243,306.59/89,720.79
  6. Step 6: Final answer
    x = 39,803.97

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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.