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Finding the Fourth Proportional to 519,077.80, 778,616.70 and 164,200.60

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Solution

The fourth proportional to 519,077.80, 778,616.70 and 164,200.60 is: 246,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,077.80 : 778,616.70 = 164,200.60 : x
  2. Step 2: Convert to fraction form
    519,077.80/778,616.70 = 164,200.60/x
  3. Step 3: Cross multiply
    519,077.80x = 778,616.70 × 164,200.60
  4. Step 4: Simplify right side
    519,077.80x = 127,849,329,310.02
  5. Step 5: Solve for x
    x = 127,849,329,310.02/519,077.80
  6. Step 6: Final answer
    x = 246,300.90

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Similar ratio
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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.