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Finding the Fourth Proportional to 691,490.25, 954,186.48 and 385,537.59

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Solution

The fourth proportional to 691,490.25, 954,186.48 and 385,537.59 is: 532,002.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,490.25 : 954,186.48 = 385,537.59 : x
  2. Step 2: Convert to fraction form
    691,490.25/954,186.48 = 385,537.59/x
  3. Step 3: Cross multiply
    691,490.25x = 954,186.48 × 385,537.59
  4. Step 4: Simplify right side
    691,490.25x = 367,874,755,909.78
  5. Step 5: Solve for x
    x = 367,874,755,909.78/691,490.25
  6. Step 6: Final answer
    x = 532,002.81

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Double scale
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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.