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Finding the Fourth Proportional to 70,598.43, 105,901.29 and 18,008.37

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Solution

The fourth proportional to 70,598.43, 105,901.29 and 18,008.37 is: 27,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,598.43 : 105,901.29 = 18,008.37 : x
  2. Step 2: Convert to fraction form
    70,598.43/105,901.29 = 18,008.37/x
  3. Step 3: Cross multiply
    70,598.43x = 105,901.29 × 18,008.37
  4. Step 4: Simplify right side
    70,598.43x = 1,907,109,613.80
  5. Step 5: Solve for x
    x = 1,907,109,613.80/70,598.43
  6. Step 6: Final answer
    x = 27,013.48

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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.