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Finding the Fourth Proportional to 354,294.78, 531,351.45 and 104,918.46

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Solution

The fourth proportional to 354,294.78, 531,351.45 and 104,918.46 is: 157,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294.78 : 531,351.45 = 104,918.46 : x
  2. Step 2: Convert to fraction form
    354,294.78/531,351.45 = 104,918.46/x
  3. Step 3: Cross multiply
    354,294.78x = 531,351.45 × 104,918.46
  4. Step 4: Simplify right side
    354,294.78x = 55,748,575,852.77
  5. Step 5: Solve for x
    x = 55,748,575,852.77/354,294.78
  6. Step 6: Final answer
    x = 157,350.82

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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.