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Finding the Fourth Proportional to 41,213.80, 61,820.02 and 13,133.47

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Solution

The fourth proportional to 41,213.80, 61,820.02 and 13,133.47 is: 19,699.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,213.80 : 61,820.02 = 13,133.47 : x
  2. Step 2: Convert to fraction form
    41,213.80/61,820.02 = 13,133.47/x
  3. Step 3: Cross multiply
    41,213.80x = 61,820.02 × 13,133.47
  4. Step 4: Simplify right side
    41,213.80x = 811,911,378.07
  5. Step 5: Solve for x
    x = 811,911,378.07/41,213.80
  6. Step 6: Final answer
    x = 19,699.99

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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.