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Finding the Fourth Proportional to 73,048.80, 109,530.95 and 28,623.54

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Solution

The fourth proportional to 73,048.80, 109,530.95 and 28,623.54 is: 42,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,048.80 : 109,530.95 = 28,623.54 : x
  2. Step 2: Convert to fraction form
    73,048.80/109,530.95 = 28,623.54/x
  3. Step 3: Cross multiply
    73,048.80x = 109,530.95 × 28,623.54
  4. Step 4: Simplify right side
    73,048.80x = 3,135,163,385.45
  5. Step 5: Solve for x
    x = 3,135,163,385.45/73,048.80
  6. Step 6: Final answer
    x = 42,918.75

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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.