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Finding the Fourth Proportional to 436,192.80, 654,289.20 and 286,893.60

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Solution

The fourth proportional to 436,192.80, 654,289.20 and 286,893.60 is: 430,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,192.80 : 654,289.20 = 286,893.60 : x
  2. Step 2: Convert to fraction form
    436,192.80/654,289.20 = 286,893.60/x
  3. Step 3: Cross multiply
    436,192.80x = 654,289.20 × 286,893.60
  4. Step 4: Simplify right side
    436,192.80x = 187,711,384,029.12
  5. Step 5: Solve for x
    x = 187,711,384,029.12/436,192.80
  6. Step 6: Final answer
    x = 430,340.40

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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.