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Finding the Fourth Proportional to 55,347.72, 83,065.82 and 28,701.29

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Solution

The fourth proportional to 55,347.72, 83,065.82 and 28,701.29 is: 43,074.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,347.72 : 83,065.82 = 28,701.29 : x
  2. Step 2: Convert to fraction form
    55,347.72/83,065.82 = 28,701.29/x
  3. Step 3: Cross multiply
    55,347.72x = 83,065.82 × 28,701.29
  4. Step 4: Simplify right side
    55,347.72x = 2,384,095,630.07
  5. Step 5: Solve for x
    x = 2,384,095,630.07/55,347.72
  6. Step 6: Final answer
    x = 43,074.87

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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.