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Finding the Fourth Proportional to 619,705.20, 854,998.24 and 347,733.12

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Solution

The fourth proportional to 619,705.20, 854,998.24 and 347,733.12 is: 479,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,705.20 : 854,998.24 = 347,733.12 : x
  2. Step 2: Convert to fraction form
    619,705.20/854,998.24 = 347,733.12/x
  3. Step 3: Cross multiply
    619,705.20x = 854,998.24 × 347,733.12
  4. Step 4: Simplify right side
    619,705.20x = 297,311,205,589.71
  5. Step 5: Solve for x
    x = 297,311,205,589.71/619,705.20
  6. Step 6: Final answer
    x = 479,762.32

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Double scale
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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.