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Finding the Fourth Proportional to 829,542.80, 1,245,235.80 and 514,355.60

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Solution

The fourth proportional to 829,542.80, 1,245,235.80 and 514,355.60 is: 772,104.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,542.80 : 1,245,235.80 = 514,355.60 : x
  2. Step 2: Convert to fraction form
    829,542.80/1,245,235.80 = 514,355.60/x
  3. Step 3: Cross multiply
    829,542.80x = 1,245,235.80 × 514,355.60
  4. Step 4: Simplify right side
    829,542.80x = 640,494,007,050.48
  5. Step 5: Solve for x
    x = 640,494,007,050.48/829,542.80
  6. Step 6: Final answer
    x = 772,104.84

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1.5x scale

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.