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Finding the Fourth Proportional to 619,777.04, 855,257.16 and 347,819.60

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Solution

The fourth proportional to 619,777.04, 855,257.16 and 347,819.60 is: 479,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,777.04 : 855,257.16 = 347,819.60 : x
  2. Step 2: Convert to fraction form
    619,777.04/855,257.16 = 347,819.60/x
  3. Step 3: Cross multiply
    619,777.04x = 855,257.16 × 347,819.60
  4. Step 4: Simplify right side
    619,777.04x = 297,475,203,288.34
  5. Step 5: Solve for x
    x = 297,475,203,288.34/619,777.04
  6. Step 6: Final answer
    x = 479,971.32

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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.