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Finding the Fourth Proportional to 70,694.08, 106,041.96 and 18,102.16

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Solution

The fourth proportional to 70,694.08, 106,041.96 and 18,102.16 is: 27,153.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.08 : 106,041.96 = 18,102.16 : x
  2. Step 2: Convert to fraction form
    70,694.08/106,041.96 = 18,102.16/x
  3. Step 3: Cross multiply
    70,694.08x = 106,041.96 × 18,102.16
  4. Step 4: Simplify right side
    70,694.08x = 1,919,588,526.63
  5. Step 5: Solve for x
    x = 1,919,588,526.63/70,694.08
  6. Step 6: Final answer
    x = 27,153.46

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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.