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Finding the Fourth Proportional to 163,616.30, 245,424.45 and 156,617.90

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Solution

The fourth proportional to 163,616.30, 245,424.45 and 156,617.90 is: 234,926.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,616.30 : 245,424.45 = 156,617.90 : x
  2. Step 2: Convert to fraction form
    163,616.30/245,424.45 = 156,617.90/x
  3. Step 3: Cross multiply
    163,616.30x = 245,424.45 × 156,617.90
  4. Step 4: Simplify right side
    163,616.30x = 38,437,861,967.66
  5. Step 5: Solve for x
    x = 38,437,861,967.66/163,616.30
  6. Step 6: Final answer
    x = 234,926.85

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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.