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Finding the Fourth Proportional to 641,761.09, 885,827.30 and 370,010.40

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Solution

The fourth proportional to 641,761.09, 885,827.30 and 370,010.40 is: 510,727.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,761.09 : 885,827.30 = 370,010.40 : x
  2. Step 2: Convert to fraction form
    641,761.09/885,827.30 = 370,010.40/x
  3. Step 3: Cross multiply
    641,761.09x = 885,827.30 × 370,010.40
  4. Step 4: Simplify right side
    641,761.09x = 327,765,313,603.92
  5. Step 5: Solve for x
    x = 327,765,313,603.92/641,761.09
  6. Step 6: Final answer
    x = 510,727.93

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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.