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Finding the Fourth Proportional to 167,721.60, 251,720.10 and 166,409.40

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Solution

The fourth proportional to 167,721.60, 251,720.10 and 166,409.40 is: 249,750.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,721.60 : 251,720.10 = 166,409.40 : x
  2. Step 2: Convert to fraction form
    167,721.60/251,720.10 = 166,409.40/x
  3. Step 3: Cross multiply
    167,721.60x = 251,720.10 × 166,409.40
  4. Step 4: Simplify right side
    167,721.60x = 41,888,590,808.94
  5. Step 5: Solve for x
    x = 41,888,590,808.94/167,721.60
  6. Step 6: Final answer
    x = 249,750.72

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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.