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Finding the Fourth Proportional to 31,726.04, 43,762.07 and 20,410.26

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Solution

The fourth proportional to 31,726.04, 43,762.07 and 20,410.26 is: 28,153.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.04 : 43,762.07 = 20,410.26 : x
  2. Step 2: Convert to fraction form
    31,726.04/43,762.07 = 20,410.26/x
  3. Step 3: Cross multiply
    31,726.04x = 43,762.07 × 20,410.26
  4. Step 4: Simplify right side
    31,726.04x = 893,195,124.79
  5. Step 5: Solve for x
    x = 893,195,124.79/31,726.04
  6. Step 6: Final answer
    x = 28,153.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.