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Finding the Fourth Proportional to 613,617.40, 920,050.26 and 239,203

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Solution

The fourth proportional to 613,617.40, 920,050.26 and 239,203 is: 358,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,617.40 : 920,050.26 = 239,203 : x
  2. Step 2: Convert to fraction form
    613,617.40/920,050.26 = 239,203/x
  3. Step 3: Cross multiply
    613,617.40x = 920,050.26 × 239,203
  4. Step 4: Simplify right side
    613,617.40x = 220,078,782,342.78
  5. Step 5: Solve for x
    x = 220,078,782,342.78/613,617.40
  6. Step 6: Final answer
    x = 358,657.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.