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Finding the Fourth Proportional to 625,864.06, 863,677.11 and 339,376.78

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Solution

The fourth proportional to 625,864.06, 863,677.11 and 339,376.78 is: 468,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,864.06 : 863,677.11 = 339,376.78 : x
  2. Step 2: Convert to fraction form
    625,864.06/863,677.11 = 339,376.78/x
  3. Step 3: Cross multiply
    625,864.06x = 863,677.11 × 339,376.78
  4. Step 4: Simplify right side
    625,864.06x = 293,111,956,551.51
  5. Step 5: Solve for x
    x = 293,111,956,551.51/625,864.06
  6. Step 6: Final answer
    x = 468,331.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.