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Finding the Fourth Proportional to 104,454.72, 156,484.74 and 80,966.16

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Solution

The fourth proportional to 104,454.72, 156,484.74 and 80,966.16 is: 121,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,454.72 : 156,484.74 = 80,966.16 : x
  2. Step 2: Convert to fraction form
    104,454.72/156,484.74 = 80,966.16/x
  3. Step 3: Cross multiply
    104,454.72x = 156,484.74 × 80,966.16
  4. Step 4: Simplify right side
    104,454.72x = 12,669,968,496.40
  5. Step 5: Solve for x
    x = 12,669,968,496.40/104,454.72
  6. Step 6: Final answer
    x = 121,296.28

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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.