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Finding the Fourth Proportional to 619,590.24, 854,984.64 and 347,620.80

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Solution

The fourth proportional to 619,590.24, 854,984.64 and 347,620.80 is: 479,688.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,590.24 : 854,984.64 = 347,620.80 : x
  2. Step 2: Convert to fraction form
    619,590.24/854,984.64 = 347,620.80/x
  3. Step 3: Cross multiply
    619,590.24x = 854,984.64 × 347,620.80
  4. Step 4: Simplify right side
    619,590.24x = 297,210,444,544.51
  5. Step 5: Solve for x
    x = 297,210,444,544.51/619,590.24
  6. Step 6: Final answer
    x = 479,688.71

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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.