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Finding the Fourth Proportional to 613,544.48, 847,107 and 384,193.79

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Solution

The fourth proportional to 613,544.48, 847,107 and 384,193.79 is: 530,447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,544.48 : 847,107 = 384,193.79 : x
  2. Step 2: Convert to fraction form
    613,544.48/847,107 = 384,193.79/x
  3. Step 3: Cross multiply
    613,544.48x = 847,107 × 384,193.79
  4. Step 4: Simplify right side
    613,544.48x = 325,453,244,630.00
  5. Step 5: Solve for x
    x = 325,453,244,630.00/613,544.48
  6. Step 6: Final answer
    x = 530,447.68

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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.