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Finding the Fourth Proportional to 105,503.91, 158,255.18 and 26,618.21

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Solution

The fourth proportional to 105,503.91, 158,255.18 and 26,618.21 is: 39,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,503.91 : 158,255.18 = 26,618.21 : x
  2. Step 2: Convert to fraction form
    105,503.91/158,255.18 = 26,618.21/x
  3. Step 3: Cross multiply
    105,503.91x = 158,255.18 × 26,618.21
  4. Step 4: Simplify right side
    105,503.91x = 4,212,469,877.37
  5. Step 5: Solve for x
    x = 4,212,469,877.37/105,503.91
  6. Step 6: Final answer
    x = 39,927.14

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1.5x scale

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.