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Finding the Fourth Proportional to 96,620.10, 144,930.15 and 81,068.10

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Solution

The fourth proportional to 96,620.10, 144,930.15 and 81,068.10 is: 121,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,620.10 : 144,930.15 = 81,068.10 : x
  2. Step 2: Convert to fraction form
    96,620.10/144,930.15 = 81,068.10/x
  3. Step 3: Cross multiply
    96,620.10x = 144,930.15 × 81,068.10
  4. Step 4: Simplify right side
    96,620.10x = 11,749,211,893.22
  5. Step 5: Solve for x
    x = 11,749,211,893.22/96,620.10
  6. Step 6: Final answer
    x = 121,602.15

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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.