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Finding the Fourth Proportional to 169,993.55, 255,053.10 and 70,162.40

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Solution

The fourth proportional to 169,993.55, 255,053.10 and 70,162.40 is: 105,269.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,993.55 : 255,053.10 = 70,162.40 : x
  2. Step 2: Convert to fraction form
    169,993.55/255,053.10 = 70,162.40/x
  3. Step 3: Cross multiply
    169,993.55x = 255,053.10 × 70,162.40
  4. Step 4: Simplify right side
    169,993.55x = 17,895,137,623.44
  5. Step 5: Solve for x
    x = 17,895,137,623.44/169,993.55
  6. Step 6: Final answer
    x = 105,269.51

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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.