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Finding the Fourth Proportional to 318,729, 439,846.02 and 177,417

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Solution

The fourth proportional to 318,729, 439,846.02 and 177,417 is: 244,835.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,729 : 439,846.02 = 177,417 : x
  2. Step 2: Convert to fraction form
    318,729/439,846.02 = 177,417/x
  3. Step 3: Cross multiply
    318,729x = 439,846.02 × 177,417
  4. Step 4: Simplify right side
    318,729x = 78,036,161,330.34
  5. Step 5: Solve for x
    x = 78,036,161,330.34/318,729
  6. Step 6: Final answer
    x = 244,835.46

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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.