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Finding the Fourth Proportional to 641,517.35, 885,515.22 and 369,693.57

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Solution

The fourth proportional to 641,517.35, 885,515.22 and 369,693.57 is: 510,304.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,517.35 : 885,515.22 = 369,693.57 : x
  2. Step 2: Convert to fraction form
    641,517.35/885,515.22 = 369,693.57/x
  3. Step 3: Cross multiply
    641,517.35x = 885,515.22 × 369,693.57
  4. Step 4: Simplify right side
    641,517.35x = 327,369,282,971.14
  5. Step 5: Solve for x
    x = 327,369,282,971.14/641,517.35
  6. Step 6: Final answer
    x = 510,304.65

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1.5x scale

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.