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Finding the Fourth Proportional to 653,900.40, 981,628.20 and 369,817.20

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Solution

The fourth proportional to 653,900.40, 981,628.20 and 369,817.20 is: 555,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,900.40 : 981,628.20 = 369,817.20 : x
  2. Step 2: Convert to fraction form
    653,900.40/981,628.20 = 369,817.20/x
  3. Step 3: Cross multiply
    653,900.40x = 981,628.20 × 369,817.20
  4. Step 4: Simplify right side
    653,900.40x = 363,022,992,365.04
  5. Step 5: Solve for x
    x = 363,022,992,365.04/653,900.40
  6. Step 6: Final answer
    x = 555,165.58

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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.