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Finding the Fourth Proportional to 58,486.83, 80,616.63 and 45,717.48

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Solution

The fourth proportional to 58,486.83, 80,616.63 and 45,717.48 is: 63,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,486.83 : 80,616.63 = 45,717.48 : x
  2. Step 2: Convert to fraction form
    58,486.83/80,616.63 = 45,717.48/x
  3. Step 3: Cross multiply
    58,486.83x = 80,616.63 × 45,717.48
  4. Step 4: Simplify right side
    58,486.83x = 3,685,589,386.28
  5. Step 5: Solve for x
    x = 3,685,589,386.28/58,486.83
  6. Step 6: Final answer
    x = 63,015.71

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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.