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Finding the Fourth Proportional to 72,705.99, 109,058.99 and 22,789.95

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Solution

The fourth proportional to 72,705.99, 109,058.99 and 22,789.95 is: 34,184.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,705.99 : 109,058.99 = 22,789.95 : x
  2. Step 2: Convert to fraction form
    72,705.99/109,058.99 = 22,789.95/x
  3. Step 3: Cross multiply
    72,705.99x = 109,058.99 × 22,789.95
  4. Step 4: Simplify right side
    72,705.99x = 2,485,448,929.15
  5. Step 5: Solve for x
    x = 2,485,448,929.15/72,705.99
  6. Step 6: Final answer
    x = 34,184.93

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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.