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Finding the Fourth Proportional to 653,912.40, 981,646.20 and 369,829.20

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Solution

The fourth proportional to 653,912.40, 981,646.20 and 369,829.20 is: 555,183.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,912.40 : 981,646.20 = 369,829.20 : x
  2. Step 2: Convert to fraction form
    653,912.40/981,646.20 = 369,829.20/x
  3. Step 3: Cross multiply
    653,912.40x = 981,646.20 × 369,829.20
  4. Step 4: Simplify right side
    653,912.40x = 363,041,428,829.04
  5. Step 5: Solve for x
    x = 363,041,428,829.04/653,912.40
  6. Step 6: Final answer
    x = 555,183.58

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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.