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Finding the Fourth Proportional to 172,303.98, 258,455.25 and 45,943.98

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Solution

The fourth proportional to 172,303.98, 258,455.25 and 45,943.98 is: 68,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,303.98 : 258,455.25 = 45,943.98 : x
  2. Step 2: Convert to fraction form
    172,303.98/258,455.25 = 45,943.98/x
  3. Step 3: Cross multiply
    172,303.98x = 258,455.25 × 45,943.98
  4. Step 4: Simplify right side
    172,303.98x = 11,874,462,836.90
  5. Step 5: Solve for x
    x = 11,874,462,836.90/172,303.98
  6. Step 6: Final answer
    x = 68,915.78

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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.