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Finding the Fourth Proportional to 163,276.80, 244,915.20 and 161,721.60

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Solution

The fourth proportional to 163,276.80, 244,915.20 and 161,721.60 is: 242,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,276.80 : 244,915.20 = 161,721.60 : x
  2. Step 2: Convert to fraction form
    163,276.80/244,915.20 = 161,721.60/x
  3. Step 3: Cross multiply
    163,276.80x = 244,915.20 × 161,721.60
  4. Step 4: Simplify right side
    163,276.80x = 39,608,078,008.32
  5. Step 5: Solve for x
    x = 39,608,078,008.32/163,276.80
  6. Step 6: Final answer
    x = 242,582.40

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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.