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Finding the Fourth Proportional to 691,212.48, 953,893.44 and 404,705.76

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Solution

The fourth proportional to 691,212.48, 953,893.44 and 404,705.76 is: 558,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,212.48 : 953,893.44 = 404,705.76 : x
  2. Step 2: Convert to fraction form
    691,212.48/953,893.44 = 404,705.76/x
  3. Step 3: Cross multiply
    691,212.48x = 953,893.44 × 404,705.76
  4. Step 4: Simplify right side
    691,212.48x = 386,046,169,594.21
  5. Step 5: Solve for x
    x = 386,046,169,594.21/691,212.48
  6. Step 6: Final answer
    x = 558,505.79

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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.