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Finding the Fourth Proportional to 476,892.31, 715,345.77 and 121,898.47

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Solution

The fourth proportional to 476,892.31, 715,345.77 and 121,898.47 is: 182,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,892.31 : 715,345.77 = 121,898.47 : x
  2. Step 2: Convert to fraction form
    476,892.31/715,345.77 = 121,898.47/x
  3. Step 3: Cross multiply
    476,892.31x = 715,345.77 × 121,898.47
  4. Step 4: Simplify right side
    476,892.31x = 87,199,554,883.97
  5. Step 5: Solve for x
    x = 87,199,554,883.97/476,892.31
  6. Step 6: Final answer
    x = 182,849.57

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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.