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Finding the Fourth Proportional to 526,806.83, 726,993.39 and 285,089.40

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Solution

The fourth proportional to 526,806.83, 726,993.39 and 285,089.40 is: 393,423.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,806.83 : 726,993.39 = 285,089.40 : x
  2. Step 2: Convert to fraction form
    526,806.83/726,993.39 = 285,089.40/x
  3. Step 3: Cross multiply
    526,806.83x = 726,993.39 × 285,089.40
  4. Step 4: Simplify right side
    526,806.83x = 207,258,109,359.07
  5. Step 5: Solve for x
    x = 207,258,109,359.07/526,806.83
  6. Step 6: Final answer
    x = 393,423.35

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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.