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Finding the Fourth Proportional to 621,825.42, 932,633.79 and 172,591.93

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Solution

The fourth proportional to 621,825.42, 932,633.79 and 172,591.93 is: 258,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,825.42 : 932,633.79 = 172,591.93 : x
  2. Step 2: Convert to fraction form
    621,825.42/932,633.79 = 172,591.93/x
  3. Step 3: Cross multiply
    621,825.42x = 932,633.79 × 172,591.93
  4. Step 4: Simplify right side
    621,825.42x = 160,965,065,799.32
  5. Step 5: Solve for x
    x = 160,965,065,799.32/621,825.42
  6. Step 6: Final answer
    x = 258,858.93

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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.