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Finding the Fourth Proportional to 119,368.80, 164,720.88 and 68,381.73

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Solution

The fourth proportional to 119,368.80, 164,720.88 and 68,381.73 is: 94,362.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,368.80 : 164,720.88 = 68,381.73 : x
  2. Step 2: Convert to fraction form
    119,368.80/164,720.88 = 68,381.73/x
  3. Step 3: Cross multiply
    119,368.80x = 164,720.88 × 68,381.73
  4. Step 4: Simplify right side
    119,368.80x = 11,263,898,741.52
  5. Step 5: Solve for x
    x = 11,263,898,741.52/119,368.80
  6. Step 6: Final answer
    x = 94,362.17

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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.