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Finding the Fourth Proportional to 104,796.51, 144,298.92 and 78,992.53

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Solution

The fourth proportional to 104,796.51, 144,298.92 and 78,992.53 is: 108,768.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,796.51 : 144,298.92 = 78,992.53 : x
  2. Step 2: Convert to fraction form
    104,796.51/144,298.92 = 78,992.53/x
  3. Step 3: Cross multiply
    104,796.51x = 144,298.92 × 78,992.53
  4. Step 4: Simplify right side
    104,796.51x = 11,398,536,767.07
  5. Step 5: Solve for x
    x = 11,398,536,767.07/104,796.51
  6. Step 6: Final answer
    x = 108,768.29

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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.