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Finding the Fourth Proportional to 619,507.87, 855,037.91 and 404,831.95

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Solution

The fourth proportional to 619,507.87, 855,037.91 and 404,831.95 is: 558,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,507.87 : 855,037.91 = 404,831.95 : x
  2. Step 2: Convert to fraction form
    619,507.87/855,037.91 = 404,831.95/x
  3. Step 3: Cross multiply
    619,507.87x = 855,037.91 × 404,831.95
  4. Step 4: Simplify right side
    619,507.87x = 346,146,664,429.23
  5. Step 5: Solve for x
    x = 346,146,664,429.23/619,507.87
  6. Step 6: Final answer
    x = 558,744.58

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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.