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Finding the Fourth Proportional to 410,978.80, 616,007.40 and 174,281.20

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Solution

The fourth proportional to 410,978.80, 616,007.40 and 174,281.20 is: 261,226.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,978.80 : 616,007.40 = 174,281.20 : x
  2. Step 2: Convert to fraction form
    410,978.80/616,007.40 = 174,281.20/x
  3. Step 3: Cross multiply
    410,978.80x = 616,007.40 × 174,281.20
  4. Step 4: Simplify right side
    410,978.80x = 107,358,508,880.88
  5. Step 5: Solve for x
    x = 107,358,508,880.88/410,978.80
  6. Step 6: Final answer
    x = 261,226.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.