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Finding the Fourth Proportional to 105,607.08, 158,410.96 and 26,721.30

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Solution

The fourth proportional to 105,607.08, 158,410.96 and 26,721.30 is: 40,082.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.08 : 158,410.96 = 26,721.30 : x
  2. Step 2: Convert to fraction form
    105,607.08/158,410.96 = 26,721.30/x
  3. Step 3: Cross multiply
    105,607.08x = 158,410.96 × 26,721.30
  4. Step 4: Simplify right side
    105,607.08x = 4,232,946,785.45
  5. Step 5: Solve for x
    x = 4,232,946,785.45/105,607.08
  6. Step 6: Final answer
    x = 40,082.04

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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.