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Finding the Fourth Proportional to 654,350.40, 981,525.60 and 388,929.60

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Solution

The fourth proportional to 654,350.40, 981,525.60 and 388,929.60 is: 583,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,350.40 : 981,525.60 = 388,929.60 : x
  2. Step 2: Convert to fraction form
    654,350.40/981,525.60 = 388,929.60/x
  3. Step 3: Cross multiply
    654,350.40x = 981,525.60 × 388,929.60
  4. Step 4: Simplify right side
    654,350.40x = 381,744,358,997.76
  5. Step 5: Solve for x
    x = 381,744,358,997.76/654,350.40
  6. Step 6: Final answer
    x = 583,394.40

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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.