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Finding the Fourth Proportional to 353,857.91, 530,261.98 and 259,904.39

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Solution

The fourth proportional to 353,857.91, 530,261.98 and 259,904.39 is: 389,471.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,857.91 : 530,261.98 = 259,904.39 : x
  2. Step 2: Convert to fraction form
    353,857.91/530,261.98 = 259,904.39/x
  3. Step 3: Cross multiply
    353,857.91x = 530,261.98 × 259,904.39
  4. Step 4: Simplify right side
    353,857.91x = 137,817,413,151.02
  5. Step 5: Solve for x
    x = 137,817,413,151.02/353,857.91
  6. Step 6: Final answer
    x = 389,471.06

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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.