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Finding the Fourth Proportional to 39,143.70, 58,717.53 and 11,065.77

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Solution

The fourth proportional to 39,143.70, 58,717.53 and 11,065.77 is: 16,599.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.70 : 58,717.53 = 11,065.77 : x
  2. Step 2: Convert to fraction form
    39,143.70/58,717.53 = 11,065.77/x
  3. Step 3: Cross multiply
    39,143.70x = 58,717.53 × 11,065.77
  4. Step 4: Simplify right side
    39,143.70x = 649,754,713.85
  5. Step 5: Solve for x
    x = 649,754,713.85/39,143.70
  6. Step 6: Final answer
    x = 16,599.22

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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.