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Finding the Fourth Proportional to 318,125.46, 438,994.82 and 174,885.46

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Solution

The fourth proportional to 318,125.46, 438,994.82 and 174,885.46 is: 241,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,125.46 : 438,994.82 = 174,885.46 : x
  2. Step 2: Convert to fraction form
    318,125.46/438,994.82 = 174,885.46/x
  3. Step 3: Cross multiply
    318,125.46x = 438,994.82 × 174,885.46
  4. Step 4: Simplify right side
    318,125.46x = 76,773,811,033.32
  5. Step 5: Solve for x
    x = 76,773,811,033.32/318,125.46
  6. Step 6: Final answer
    x = 241,331.87

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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.