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Finding the Fourth Proportional to 507,154.26, 699,894.74 and 280,799.76

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Solution

The fourth proportional to 507,154.26, 699,894.74 and 280,799.76 is: 387,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,154.26 : 699,894.74 = 280,799.76 : x
  2. Step 2: Convert to fraction form
    507,154.26/699,894.74 = 280,799.76/x
  3. Step 3: Cross multiply
    507,154.26x = 699,894.74 × 280,799.76
  4. Step 4: Simplify right side
    507,154.26x = 196,530,275,017.26
  5. Step 5: Solve for x
    x = 196,530,275,017.26/507,154.26
  6. Step 6: Final answer
    x = 387,515.77

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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.