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Finding the Fourth Proportional to 629,538.46, 868,763.10 and 343,058.47

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Solution

The fourth proportional to 629,538.46, 868,763.10 and 343,058.47 is: 473,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,538.46 : 868,763.10 = 343,058.47 : x
  2. Step 2: Convert to fraction form
    629,538.46/868,763.10 = 343,058.47/x
  3. Step 3: Cross multiply
    629,538.46x = 868,763.10 × 343,058.47
  4. Step 4: Simplify right side
    629,538.46x = 298,036,538,993.02
  5. Step 5: Solve for x
    x = 298,036,538,993.02/629,538.46
  6. Step 6: Final answer
    x = 473,420.70

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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.