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Finding the Fourth Proportional to 212,081.64, 318,044.52 and 62,283.48

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Solution

The fourth proportional to 212,081.64, 318,044.52 and 62,283.48 is: 93,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,081.64 : 318,044.52 = 62,283.48 : x
  2. Step 2: Convert to fraction form
    212,081.64/318,044.52 = 62,283.48/x
  3. Step 3: Cross multiply
    212,081.64x = 318,044.52 × 62,283.48
  4. Step 4: Simplify right side
    212,081.64x = 19,808,919,500.53
  5. Step 5: Solve for x
    x = 19,808,919,500.53/212,081.64
  6. Step 6: Final answer
    x = 93,402.33

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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.