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Finding the Fourth Proportional to 19,412.69, 29,132.49 and 8,883.99

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Solution

The fourth proportional to 19,412.69, 29,132.49 and 8,883.99 is: 13,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.69 : 29,132.49 = 8,883.99 : x
  2. Step 2: Convert to fraction form
    19,412.69/29,132.49 = 8,883.99/x
  3. Step 3: Cross multiply
    19,412.69x = 29,132.49 × 8,883.99
  4. Step 4: Simplify right side
    19,412.69x = 258,812,749.84
  5. Step 5: Solve for x
    x = 258,812,749.84/19,412.69
  6. Step 6: Final answer
    x = 13,332.15

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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.