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Finding the Fourth Proportional to 568,062.56, 783,928.86 and 313,421.24

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Solution

The fourth proportional to 568,062.56, 783,928.86 and 313,421.24 is: 432,522.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,062.56 : 783,928.86 = 313,421.24 : x
  2. Step 2: Convert to fraction form
    568,062.56/783,928.86 = 313,421.24/x
  3. Step 3: Cross multiply
    568,062.56x = 783,928.86 × 313,421.24
  4. Step 4: Simplify right side
    568,062.56x = 245,699,955,372.99
  5. Step 5: Solve for x
    x = 245,699,955,372.99/568,062.56
  6. Step 6: Final answer
    x = 432,522.71

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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.