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Finding the Fourth Proportional to 60,714.40, 91,244.40 and 53,111.20

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Solution

The fourth proportional to 60,714.40, 91,244.40 and 53,111.20 is: 79,817.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,714.40 : 91,244.40 = 53,111.20 : x
  2. Step 2: Convert to fraction form
    60,714.40/91,244.40 = 53,111.20/x
  3. Step 3: Cross multiply
    60,714.40x = 91,244.40 × 53,111.20
  4. Step 4: Simplify right side
    60,714.40x = 4,846,099,577.28
  5. Step 5: Solve for x
    x = 4,846,099,577.28/60,714.40
  6. Step 6: Final answer
    x = 79,817.96

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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.