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Finding the Fourth Proportional to 437,763.60, 656,645.40 and 434,998.80

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Solution

The fourth proportional to 437,763.60, 656,645.40 and 434,998.80 is: 652,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,763.60 : 656,645.40 = 434,998.80 : x
  2. Step 2: Convert to fraction form
    437,763.60/656,645.40 = 434,998.80/x
  3. Step 3: Cross multiply
    437,763.60x = 656,645.40 × 434,998.80
  4. Step 4: Simplify right side
    437,763.60x = 285,639,961,025.52
  5. Step 5: Solve for x
    x = 285,639,961,025.52/437,763.60
  6. Step 6: Final answer
    x = 652,498.20

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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.