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Finding the Fourth Proportional to 40,894.71, 61,334.95 and 13,192.71

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Solution

The fourth proportional to 40,894.71, 61,334.95 and 13,192.71 is: 19,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,894.71 : 61,334.95 = 13,192.71 : x
  2. Step 2: Convert to fraction form
    40,894.71/61,334.95 = 13,192.71/x
  3. Step 3: Cross multiply
    40,894.71x = 61,334.95 × 13,192.71
  4. Step 4: Simplify right side
    40,894.71x = 809,174,208.21
  5. Step 5: Solve for x
    x = 809,174,208.21/40,894.71
  6. Step 6: Final answer
    x = 19,786.77

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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.