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Finding the Fourth Proportional to 53,804.45, 74,081.13 and 45,721.06

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Solution

The fourth proportional to 53,804.45, 74,081.13 and 45,721.06 is: 62,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,804.45 : 74,081.13 = 45,721.06 : x
  2. Step 2: Convert to fraction form
    53,804.45/74,081.13 = 45,721.06/x
  3. Step 3: Cross multiply
    53,804.45x = 74,081.13 × 45,721.06
  4. Step 4: Simplify right side
    53,804.45x = 3,387,067,690.12
  5. Step 5: Solve for x
    x = 3,387,067,690.12/53,804.45
  6. Step 6: Final answer
    x = 62,951.44

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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.