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Finding the Fourth Proportional to 39,488.76, 59,243.38 and 11,786.76

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Solution

The fourth proportional to 39,488.76, 59,243.38 and 11,786.76 is: 17,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,488.76 : 59,243.38 = 11,786.76 : x
  2. Step 2: Convert to fraction form
    39,488.76/59,243.38 = 11,786.76/x
  3. Step 3: Cross multiply
    39,488.76x = 59,243.38 × 11,786.76
  4. Step 4: Simplify right side
    39,488.76x = 698,287,501.65
  5. Step 5: Solve for x
    x = 698,287,501.65/39,488.76
  6. Step 6: Final answer
    x = 17,683.20

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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.