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Finding the Fourth Proportional to 228,428.40, 342,664.20 and 62,216.40

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Solution

The fourth proportional to 228,428.40, 342,664.20 and 62,216.40 is: 93,330.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,428.40 : 342,664.20 = 62,216.40 : x
  2. Step 2: Convert to fraction form
    228,428.40/342,664.20 = 62,216.40/x
  3. Step 3: Cross multiply
    228,428.40x = 342,664.20 × 62,216.40
  4. Step 4: Simplify right side
    228,428.40x = 21,319,332,932.88
  5. Step 5: Solve for x
    x = 21,319,332,932.88/228,428.40
  6. Step 6: Final answer
    x = 93,330.48

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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.