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Finding the Fourth Proportional to 228,017.28, 342,025.92 and 61,805.28

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Solution

The fourth proportional to 228,017.28, 342,025.92 and 61,805.28 is: 92,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,017.28 : 342,025.92 = 61,805.28 : x
  2. Step 2: Convert to fraction form
    228,017.28/342,025.92 = 61,805.28/x
  3. Step 3: Cross multiply
    228,017.28x = 342,025.92 × 61,805.28
  4. Step 4: Simplify right side
    228,017.28x = 21,139,007,752.86
  5. Step 5: Solve for x
    x = 21,139,007,752.86/228,017.28
  6. Step 6: Final answer
    x = 92,707.92

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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.