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Finding the Fourth Proportional to 104,879.45, 144,787.29 and 71,066.63

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Solution

The fourth proportional to 104,879.45, 144,787.29 and 71,066.63 is: 98,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,879.45 : 144,787.29 = 71,066.63 : x
  2. Step 2: Convert to fraction form
    104,879.45/144,787.29 = 71,066.63/x
  3. Step 3: Cross multiply
    104,879.45x = 144,787.29 × 71,066.63
  4. Step 4: Simplify right side
    104,879.45x = 10,289,544,767.13
  5. Step 5: Solve for x
    x = 10,289,544,767.13/104,879.45
  6. Step 6: Final answer
    x = 98,108.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.