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Finding the Fourth Proportional to 70,699.08, 106,049.46 and 18,107.16

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Solution

The fourth proportional to 70,699.08, 106,049.46 and 18,107.16 is: 27,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,699.08 : 106,049.46 = 18,107.16 : x
  2. Step 2: Convert to fraction form
    70,699.08/106,049.46 = 18,107.16/x
  3. Step 3: Cross multiply
    70,699.08x = 106,049.46 × 18,107.16
  4. Step 4: Simplify right side
    70,699.08x = 1,920,254,540.13
  5. Step 5: Solve for x
    x = 1,920,254,540.13/70,699.08
  6. Step 6: Final answer
    x = 27,160.96

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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.