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Finding the Fourth Proportional to 526,805.30, 726,993.53 and 285,087.89

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Solution

The fourth proportional to 526,805.30, 726,993.53 and 285,087.89 is: 393,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,805.30 : 726,993.53 = 285,087.89 : x
  2. Step 2: Convert to fraction form
    526,805.30/726,993.53 = 285,087.89/x
  3. Step 3: Cross multiply
    526,805.30x = 726,993.53 × 285,087.89
  4. Step 4: Simplify right side
    526,805.30x = 207,257,051,511.35
  5. Step 5: Solve for x
    x = 207,257,051,511.35/526,805.30
  6. Step 6: Final answer
    x = 393,422.49

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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.