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Finding the Fourth Proportional to 196,335.76, 294,347.64 and 85,450

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Solution

The fourth proportional to 196,335.76, 294,347.64 and 85,450 is: 128,107.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,335.76 : 294,347.64 = 85,450 : x
  2. Step 2: Convert to fraction form
    196,335.76/294,347.64 = 85,450/x
  3. Step 3: Cross multiply
    196,335.76x = 294,347.64 × 85,450
  4. Step 4: Simplify right side
    196,335.76x = 25,152,005,838
  5. Step 5: Solve for x
    x = 25,152,005,838/196,335.76
  6. Step 6: Final answer
    x = 128,107.11

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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.