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Finding the Fourth Proportional to 926,995, 1,279,253.10 and 503,059

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Solution

The fourth proportional to 926,995, 1,279,253.10 and 503,059 is: 694,221.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,995 : 1,279,253.10 = 503,059 : x
  2. Step 2: Convert to fraction form
    926,995/1,279,253.10 = 503,059/x
  3. Step 3: Cross multiply
    926,995x = 1,279,253.10 × 503,059
  4. Step 4: Simplify right side
    926,995x = 643,539,785,232.90
  5. Step 5: Solve for x
    x = 643,539,785,232.90/926,995
  6. Step 6: Final answer
    x = 694,221.42

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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.