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Finding the Fourth Proportional to 167,328.68, 250,919.34 and 78,607.40

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Solution

The fourth proportional to 167,328.68, 250,919.34 and 78,607.40 is: 117,876.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,328.68 : 250,919.34 = 78,607.40 : x
  2. Step 2: Convert to fraction form
    167,328.68/250,919.34 = 78,607.40/x
  3. Step 3: Cross multiply
    167,328.68x = 250,919.34 × 78,607.40
  4. Step 4: Simplify right side
    167,328.68x = 19,724,116,927.12
  5. Step 5: Solve for x
    x = 19,724,116,927.12/167,328.68
  6. Step 6: Final answer
    x = 117,876.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.