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Finding the Fourth Proportional to 526,806.33, 726,992.70 and 285,088.91

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Solution

The fourth proportional to 526,806.33, 726,992.70 and 285,088.91 is: 393,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,806.33 : 726,992.70 = 285,088.91 : x
  2. Step 2: Convert to fraction form
    526,806.33/726,992.70 = 285,088.91/x
  3. Step 3: Cross multiply
    526,806.33x = 726,992.70 × 285,088.91
  4. Step 4: Simplify right side
    526,806.33x = 207,257,552,785.99
  5. Step 5: Solve for x
    x = 207,257,552,785.99/526,806.33
  6. Step 6: Final answer
    x = 393,422.67

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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.