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Finding the Fourth Proportional to 507,000.06, 699,708.78 and 280,645.56

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Solution

The fourth proportional to 507,000.06, 699,708.78 and 280,645.56 is: 387,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,000.06 : 699,708.78 = 280,645.56 : x
  2. Step 2: Convert to fraction form
    507,000.06/699,708.78 = 280,645.56/x
  3. Step 3: Cross multiply
    507,000.06x = 699,708.78 × 280,645.56
  4. Step 4: Simplify right side
    507,000.06x = 196,370,162,400.02
  5. Step 5: Solve for x
    x = 196,370,162,400.02/507,000.06
  6. Step 6: Final answer
    x = 387,317.83

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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.