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Finding the Fourth Proportional to 102,612.80, 153,919.20 and 96,003.20

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Solution

The fourth proportional to 102,612.80, 153,919.20 and 96,003.20 is: 144,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,612.80 : 153,919.20 = 96,003.20 : x
  2. Step 2: Convert to fraction form
    102,612.80/153,919.20 = 96,003.20/x
  3. Step 3: Cross multiply
    102,612.80x = 153,919.20 × 96,003.20
  4. Step 4: Simplify right side
    102,612.80x = 14,776,735,741.44
  5. Step 5: Solve for x
    x = 14,776,735,741.44/102,612.80
  6. Step 6: Final answer
    x = 144,004.80

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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.