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Finding the Fourth Proportional to 656,114.40, 981,838.80 and 455,493.60

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Solution

The fourth proportional to 656,114.40, 981,838.80 and 455,493.60 is: 681,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,114.40 : 981,838.80 = 455,493.60 : x
  2. Step 2: Convert to fraction form
    656,114.40/981,838.80 = 455,493.60/x
  3. Step 3: Cross multiply
    656,114.40x = 981,838.80 × 455,493.60
  4. Step 4: Simplify right side
    656,114.40x = 447,221,289,631.68
  5. Step 5: Solve for x
    x = 447,221,289,631.68/656,114.40
  6. Step 6: Final answer
    x = 681,620.90

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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.