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Finding the Fourth Proportional to 619,854.80, 855,333.81 and 347,952.58

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Solution

The fourth proportional to 619,854.80, 855,333.81 and 347,952.58 is: 480,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,854.80 : 855,333.81 = 347,952.58 : x
  2. Step 2: Convert to fraction form
    619,854.80/855,333.81 = 347,952.58/x
  3. Step 3: Cross multiply
    619,854.80x = 855,333.81 × 347,952.58
  4. Step 4: Simplify right side
    619,854.80x = 297,615,603,812.40
  5. Step 5: Solve for x
    x = 297,615,603,812.40/619,854.80
  6. Step 6: Final answer
    x = 480,137.62

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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.