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Finding the Fourth Proportional to 119,281.79, 164,612.42 and 68,311.01

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Solution

The fourth proportional to 119,281.79, 164,612.42 and 68,311.01 is: 94,271.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,281.79 : 164,612.42 = 68,311.01 : x
  2. Step 2: Convert to fraction form
    119,281.79/164,612.42 = 68,311.01/x
  3. Step 3: Cross multiply
    119,281.79x = 164,612.42 × 68,311.01
  4. Step 4: Simplify right side
    119,281.79x = 11,244,839,504.13
  5. Step 5: Solve for x
    x = 11,244,839,504.13/119,281.79
  6. Step 6: Final answer
    x = 94,271.22

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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.