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Finding the Fourth Proportional to 172,369.79, 258,554.69 and 54,050.66

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Solution

The fourth proportional to 172,369.79, 258,554.69 and 54,050.66 is: 81,075.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,369.79 : 258,554.69 = 54,050.66 : x
  2. Step 2: Convert to fraction form
    172,369.79/258,554.69 = 54,050.66/x
  3. Step 3: Cross multiply
    172,369.79x = 258,554.69 × 54,050.66
  4. Step 4: Simplify right side
    172,369.79x = 13,975,051,249.84
  5. Step 5: Solve for x
    x = 13,975,051,249.84/172,369.79
  6. Step 6: Final answer
    x = 81,075.99

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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.