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Finding the Fourth Proportional to 168,775.80, 253,163.70 and 166,151.40

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Solution

The fourth proportional to 168,775.80, 253,163.70 and 166,151.40 is: 249,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,775.80 : 253,163.70 = 166,151.40 : x
  2. Step 2: Convert to fraction form
    168,775.80/253,163.70 = 166,151.40/x
  3. Step 3: Cross multiply
    168,775.80x = 253,163.70 × 166,151.40
  4. Step 4: Simplify right side
    168,775.80x = 42,063,503,184.18
  5. Step 5: Solve for x
    x = 42,063,503,184.18/168,775.80
  6. Step 6: Final answer
    x = 249,227.10

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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.