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Finding the Fourth Proportional to 458,195.58, 687,392.73 and 191,818.98

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Solution

The fourth proportional to 458,195.58, 687,392.73 and 191,818.98 is: 287,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,195.58 : 687,392.73 = 191,818.98 : x
  2. Step 2: Convert to fraction form
    458,195.58/687,392.73 = 191,818.98/x
  3. Step 3: Cross multiply
    458,195.58x = 687,392.73 × 191,818.98
  4. Step 4: Simplify right side
    458,195.58x = 131,854,972,328.02
  5. Step 5: Solve for x
    x = 131,854,972,328.02/458,195.58
  6. Step 6: Final answer
    x = 287,770.07

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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.