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Finding the Fourth Proportional to 135,295.72, 202,721.94 and 72,048.69

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Solution

The fourth proportional to 135,295.72, 202,721.94 and 72,048.69 is: 107,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,295.72 : 202,721.94 = 72,048.69 : x
  2. Step 2: Convert to fraction form
    135,295.72/202,721.94 = 72,048.69/x
  3. Step 3: Cross multiply
    135,295.72x = 202,721.94 × 72,048.69
  4. Step 4: Simplify right side
    135,295.72x = 14,605,850,211.26
  5. Step 5: Solve for x
    x = 14,605,850,211.26/135,295.72
  6. Step 6: Final answer
    x = 107,955.01

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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.