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Finding the Fourth Proportional to 212,401.71, 318,595.14 and 62,644.32

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Solution

The fourth proportional to 212,401.71, 318,595.14 and 62,644.32 is: 93,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,401.71 : 318,595.14 = 62,644.32 : x
  2. Step 2: Convert to fraction form
    212,401.71/318,595.14 = 62,644.32/x
  3. Step 3: Cross multiply
    212,401.71x = 318,595.14 × 62,644.32
  4. Step 4: Simplify right side
    212,401.71x = 19,958,175,900.60
  5. Step 5: Solve for x
    x = 19,958,175,900.60/212,401.71
  6. Step 6: Final answer
    x = 93,964.29

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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.