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Finding the Fourth Proportional to 172,970.46, 259,266.15 and 67,673.70

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Solution

The fourth proportional to 172,970.46, 259,266.15 and 67,673.70 is: 101,436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,970.46 : 259,266.15 = 67,673.70 : x
  2. Step 2: Convert to fraction form
    172,970.46/259,266.15 = 67,673.70/x
  3. Step 3: Cross multiply
    172,970.46x = 259,266.15 × 67,673.70
  4. Step 4: Simplify right side
    172,970.46x = 17,545,499,655.26
  5. Step 5: Solve for x
    x = 17,545,499,655.26/172,970.46
  6. Step 6: Final answer
    x = 101,436.39

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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.