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Finding the Fourth Proportional to 434,542.40, 651,619.20 and 197,763.20

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Solution

The fourth proportional to 434,542.40, 651,619.20 and 197,763.20 is: 296,556.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,542.40 : 651,619.20 = 197,763.20 : x
  2. Step 2: Convert to fraction form
    434,542.40/651,619.20 = 197,763.20/x
  3. Step 3: Cross multiply
    434,542.40x = 651,619.20 × 197,763.20
  4. Step 4: Simplify right side
    434,542.40x = 128,866,298,173.44
  5. Step 5: Solve for x
    x = 128,866,298,173.44/434,542.40
  6. Step 6: Final answer
    x = 296,556.33

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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.