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Finding the Fourth Proportional to 168,686.70, 253,030.05 and 165,770.70

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Solution

The fourth proportional to 168,686.70, 253,030.05 and 165,770.70 is: 248,656.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,686.70 : 253,030.05 = 165,770.70 : x
  2. Step 2: Convert to fraction form
    168,686.70/253,030.05 = 165,770.70/x
  3. Step 3: Cross multiply
    168,686.70x = 253,030.05 × 165,770.70
  4. Step 4: Simplify right side
    168,686.70x = 41,944,968,509.54
  5. Step 5: Solve for x
    x = 41,944,968,509.54/168,686.70
  6. Step 6: Final answer
    x = 248,656.05

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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.