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Finding the Fourth Proportional to 619,767.68, 855,268.16 and 347,814.24

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Solution

The fourth proportional to 619,767.68, 855,268.16 and 347,814.24 is: 479,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,767.68 : 855,268.16 = 347,814.24 : x
  2. Step 2: Convert to fraction form
    619,767.68/855,268.16 = 347,814.24/x
  3. Step 3: Cross multiply
    619,767.68x = 855,268.16 × 347,814.24
  4. Step 4: Simplify right side
    619,767.68x = 297,474,445,066.60
  5. Step 5: Solve for x
    x = 297,474,445,066.60/619,767.68
  6. Step 6: Final answer
    x = 479,977.34

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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.