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Finding the Fourth Proportional to 622,167.33, 858,856.31 and 418,336.40

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Solution

The fourth proportional to 622,167.33, 858,856.31 and 418,336.40 is: 577,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,167.33 : 858,856.31 = 418,336.40 : x
  2. Step 2: Convert to fraction form
    622,167.33/858,856.31 = 418,336.40/x
  3. Step 3: Cross multiply
    622,167.33x = 858,856.31 × 418,336.40
  4. Step 4: Simplify right side
    622,167.33x = 359,290,856,842.68
  5. Step 5: Solve for x
    x = 359,290,856,842.68/622,167.33
  6. Step 6: Final answer
    x = 577,482.68

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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.