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Finding the Fourth Proportional to 109,093.20, 163,726.20 and 42,565.20

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Solution

The fourth proportional to 109,093.20, 163,726.20 and 42,565.20 is: 63,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,093.20 : 163,726.20 = 42,565.20 : x
  2. Step 2: Convert to fraction form
    109,093.20/163,726.20 = 42,565.20/x
  3. Step 3: Cross multiply
    109,093.20x = 163,726.20 × 42,565.20
  4. Step 4: Simplify right side
    109,093.20x = 6,969,038,448.24
  5. Step 5: Solve for x
    x = 6,969,038,448.24/109,093.20
  6. Step 6: Final answer
    x = 63,881.51

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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.