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Finding the Fourth Proportional to 619,637.91, 855,097.98 and 347,705.19

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Solution

The fourth proportional to 619,637.91, 855,097.98 and 347,705.19 is: 479,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,637.91 : 855,097.98 = 347,705.19 : x
  2. Step 2: Convert to fraction form
    619,637.91/855,097.98 = 347,705.19/x
  3. Step 3: Cross multiply
    619,637.91x = 855,097.98 × 347,705.19
  4. Step 4: Simplify right side
    619,637.91x = 297,322,005,604.52
  5. Step 5: Solve for x
    x = 297,322,005,604.52/619,637.91
  6. Step 6: Final answer
    x = 479,831.85

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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.