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Finding the Fourth Proportional to 316,563.54, 474,869.91 and 91,927.62

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Solution

The fourth proportional to 316,563.54, 474,869.91 and 91,927.62 is: 137,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,563.54 : 474,869.91 = 91,927.62 : x
  2. Step 2: Convert to fraction form
    316,563.54/474,869.91 = 91,927.62/x
  3. Step 3: Cross multiply
    316,563.54x = 474,869.91 × 91,927.62
  4. Step 4: Simplify right side
    316,563.54x = 43,653,660,635.91
  5. Step 5: Solve for x
    x = 43,653,660,635.91/316,563.54
  6. Step 6: Final answer
    x = 137,898.57

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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.