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Finding the Fourth Proportional to 109,080.91, 163,603.14 and 30,203.11

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Solution

The fourth proportional to 109,080.91, 163,603.14 and 30,203.11 is: 45,299.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,080.91 : 163,603.14 = 30,203.11 : x
  2. Step 2: Convert to fraction form
    109,080.91/163,603.14 = 30,203.11/x
  3. Step 3: Cross multiply
    109,080.91x = 163,603.14 × 30,203.11
  4. Step 4: Simplify right side
    109,080.91x = 4,941,323,633.77
  5. Step 5: Solve for x
    x = 4,941,323,633.77/109,080.91
  6. Step 6: Final answer
    x = 45,299.62

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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.