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Finding the Fourth Proportional to 856,992,557.56, 1,182,662,687.54 and 480,732,551.32

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Solution

The fourth proportional to 856,992,557.56, 1,182,662,687.54 and 480,732,551.32 is: 663,418,189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,992,557.56 : 1,182,662,687.54 = 480,732,551.32 : x
  2. Step 2: Convert to fraction form
    856,992,557.56/1,182,662,687.54 = 480,732,551.32/x
  3. Step 3: Cross multiply
    856,992,557.56x = 1,182,662,687.54 × 480,732,551.32
  4. Step 4: Simplify right side
    856,992,557.56x = 568,544,451,132,072,128
  5. Step 5: Solve for x
    x = 568,544,451,132,072,128/856,992,557.56
  6. Step 6: Final answer
    x = 663,418,189.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.