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Finding the Fourth Proportional to 119,484.50, 164,869.31 and 68,487.84

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Solution

The fourth proportional to 119,484.50, 164,869.31 and 68,487.84 is: 94,502.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,484.50 : 164,869.31 = 68,487.84 : x
  2. Step 2: Convert to fraction form
    119,484.50/164,869.31 = 68,487.84/x
  3. Step 3: Cross multiply
    119,484.50x = 164,869.31 × 68,487.84
  4. Step 4: Simplify right side
    119,484.50x = 11,291,542,924.19
  5. Step 5: Solve for x
    x = 11,291,542,924.19/119,484.50
  6. Step 6: Final answer
    x = 94,502.16

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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.