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Finding the Fourth Proportional to 39,398.70, 59,048.76 and 19,682.76

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Solution

The fourth proportional to 39,398.70, 59,048.76 and 19,682.76 is: 29,499.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398.70 : 59,048.76 = 19,682.76 : x
  2. Step 2: Convert to fraction form
    39,398.70/59,048.76 = 19,682.76/x
  3. Step 3: Cross multiply
    39,398.70x = 59,048.76 × 19,682.76
  4. Step 4: Simplify right side
    39,398.70x = 1,162,242,571.38
  5. Step 5: Solve for x
    x = 1,162,242,571.38/39,398.70
  6. Step 6: Final answer
    x = 29,499.52

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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.