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Finding the Fourth Proportional to 526,969.70, 727,217.59 and 285,252.21

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Solution

The fourth proportional to 526,969.70, 727,217.59 and 285,252.21 is: 393,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,969.70 : 727,217.59 = 285,252.21 : x
  2. Step 2: Convert to fraction form
    526,969.70/727,217.59 = 285,252.21/x
  3. Step 3: Cross multiply
    526,969.70x = 727,217.59 × 285,252.21
  4. Step 4: Simplify right side
    526,969.70x = 207,440,419,636.03
  5. Step 5: Solve for x
    x = 207,440,419,636.03/526,969.70
  6. Step 6: Final answer
    x = 393,647.72

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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.