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Finding the Fourth Proportional to 72,954.63, 109,120.91 and 44,805.51

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Solution

The fourth proportional to 72,954.63, 109,120.91 and 44,805.51 is: 67,017.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,954.63 : 109,120.91 = 44,805.51 : x
  2. Step 2: Convert to fraction form
    72,954.63/109,120.91 = 44,805.51/x
  3. Step 3: Cross multiply
    72,954.63x = 109,120.91 × 44,805.51
  4. Step 4: Simplify right side
    72,954.63x = 4,889,217,800.19
  5. Step 5: Solve for x
    x = 4,889,217,800.19/72,954.63
  6. Step 6: Final answer
    x = 67,017.24

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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.