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Finding the Fourth Proportional to 172,486.67, 258,731.28 and 60,166.53

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Solution

The fourth proportional to 172,486.67, 258,731.28 and 60,166.53 is: 90,250.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,486.67 : 258,731.28 = 60,166.53 : x
  2. Step 2: Convert to fraction form
    172,486.67/258,731.28 = 60,166.53/x
  3. Step 3: Cross multiply
    172,486.67x = 258,731.28 × 60,166.53
  4. Step 4: Simplify right side
    172,486.67x = 15,566,963,320.06
  5. Step 5: Solve for x
    x = 15,566,963,320.06/172,486.67
  6. Step 6: Final answer
    x = 90,250.24

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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.