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Finding the Fourth Proportional to 386,072,317.20, 579,108,475.80 and 386,072,317.20

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Solution

The fourth proportional to 386,072,317.20, 579,108,475.80 and 386,072,317.20 is: 579,108,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,072,317.20 : 579,108,475.80 = 386,072,317.20 : x
  2. Step 2: Convert to fraction form
    386,072,317.20/579,108,475.80 = 386,072,317.20/x
  3. Step 3: Cross multiply
    386,072,317.20x = 579,108,475.80 × 386,072,317.20
  4. Step 4: Simplify right side
    386,072,317.20x = 223,577,751,162,266,112
  5. Step 5: Solve for x
    x = 223,577,751,162,266,112/386,072,317.20
  6. Step 6: Final answer
    x = 579,108,475.80

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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.