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Finding the Fourth Proportional to 251,686.77, 377,529.75 and 172,561.11

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Solution

The fourth proportional to 251,686.77, 377,529.75 and 172,561.11 is: 258,841.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,686.77 : 377,529.75 = 172,561.11 : x
  2. Step 2: Convert to fraction form
    251,686.77/377,529.75 = 172,561.11/x
  3. Step 3: Cross multiply
    251,686.77x = 377,529.75 × 172,561.11
  4. Step 4: Simplify right side
    251,686.77x = 65,146,952,718.02
  5. Step 5: Solve for x
    x = 65,146,952,718.02/251,686.77
  6. Step 6: Final answer
    x = 258,841.39

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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.