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Finding the Fourth Proportional to 178,064.64, 267,129.54 and 89,379.36

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Solution

The fourth proportional to 178,064.64, 267,129.54 and 89,379.36 is: 134,085.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,064.64 : 267,129.54 = 89,379.36 : x
  2. Step 2: Convert to fraction form
    178,064.64/267,129.54 = 89,379.36/x
  3. Step 3: Cross multiply
    178,064.64x = 267,129.54 × 89,379.36
  4. Step 4: Simplify right side
    178,064.64x = 23,875,867,322.29
  5. Step 5: Solve for x
    x = 23,875,867,322.29/178,064.64
  6. Step 6: Final answer
    x = 134,085.39

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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.