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Finding the Fourth Proportional to 193,987,992.96, 291,028,318.32 and 64,596,724.56

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Solution

The fourth proportional to 193,987,992.96, 291,028,318.32 and 64,596,724.56 is: 96,910,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,987,992.96 : 291,028,318.32 = 64,596,724.56 : x
  2. Step 2: Convert to fraction form
    193,987,992.96/291,028,318.32 = 64,596,724.56/x
  3. Step 3: Cross multiply
    193,987,992.96x = 291,028,318.32 × 64,596,724.56
  4. Step 4: Simplify right side
    193,987,992.96x = 18,799,476,117,677,044
  5. Step 5: Solve for x
    x = 18,799,476,117,677,044/193,987,992.96
  6. Step 6: Final answer
    x = 96,910,514.05

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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.