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Finding the Fourth Proportional to 576,173,930.40, 864,259,614.72 and 445,206,643.20

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Solution

The fourth proportional to 576,173,930.40, 864,259,614.72 and 445,206,643.20 is: 667,808,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,173,930.40 : 864,259,614.72 = 445,206,643.20 : x
  2. Step 2: Convert to fraction form
    576,173,930.40/864,259,614.72 = 445,206,643.20/x
  3. Step 3: Cross multiply
    576,173,930.40x = 864,259,614.72 × 445,206,643.20
  4. Step 4: Simplify right side
    576,173,930.40x = 384,774,121,922,816,512
  5. Step 5: Solve for x
    x = 384,774,121,922,816,512/576,173,930.40
  6. Step 6: Final answer
    x = 667,808,975.07

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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.