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Finding the Fourth Proportional to 96,994.64, 133,914.12 and 66,418.93

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Solution

The fourth proportional to 96,994.64, 133,914.12 and 66,418.93 is: 91,700.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,994.64 : 133,914.12 = 66,418.93 : x
  2. Step 2: Convert to fraction form
    96,994.64/133,914.12 = 66,418.93/x
  3. Step 3: Cross multiply
    96,994.64x = 133,914.12 × 66,418.93
  4. Step 4: Simplify right side
    96,994.64x = 8,894,432,227.51
  5. Step 5: Solve for x
    x = 8,894,432,227.51/96,994.64
  6. Step 6: Final answer
    x = 91,700.24

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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.