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Finding the Fourth Proportional to 153,988.80, 230,961.60 and 48,818.40

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Solution

The fourth proportional to 153,988.80, 230,961.60 and 48,818.40 is: 73,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,988.80 : 230,961.60 = 48,818.40 : x
  2. Step 2: Convert to fraction form
    153,988.80/230,961.60 = 48,818.40/x
  3. Step 3: Cross multiply
    153,988.80x = 230,961.60 × 48,818.40
  4. Step 4: Simplify right side
    153,988.80x = 11,275,175,773.44
  5. Step 5: Solve for x
    x = 11,275,175,773.44/153,988.80
  6. Step 6: Final answer
    x = 73,220.75

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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.