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Finding the Fourth Proportional to 471,843.18, 708,069.24 and 172,298.66

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Solution

The fourth proportional to 471,843.18, 708,069.24 and 172,298.66 is: 258,559.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,843.18 : 708,069.24 = 172,298.66 : x
  2. Step 2: Convert to fraction form
    471,843.18/708,069.24 = 172,298.66/x
  3. Step 3: Cross multiply
    471,843.18x = 708,069.24 × 172,298.66
  4. Step 4: Simplify right side
    471,843.18x = 121,999,381,239.22
  5. Step 5: Solve for x
    x = 121,999,381,239.22/471,843.18
  6. Step 6: Final answer
    x = 258,559.17

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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.