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Finding the Fourth Proportional to 636,177.60, 877,910.49 and 345,782.34

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Solution

The fourth proportional to 636,177.60, 877,910.49 and 345,782.34 is: 477,171.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,177.60 : 877,910.49 = 345,782.34 : x
  2. Step 2: Convert to fraction form
    636,177.60/877,910.49 = 345,782.34/x
  3. Step 3: Cross multiply
    636,177.60x = 877,910.49 × 345,782.34
  4. Step 4: Simplify right side
    636,177.60x = 303,565,943,542.75
  5. Step 5: Solve for x
    x = 303,565,943,542.75/636,177.60
  6. Step 6: Final answer
    x = 477,171.69

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1.5x scale

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.