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Finding the Fourth Proportional to 178,928.01, 268,392.09 and 84,088.59

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Solution

The fourth proportional to 178,928.01, 268,392.09 and 84,088.59 is: 126,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,928.01 : 268,392.09 = 84,088.59 : x
  2. Step 2: Convert to fraction form
    178,928.01/268,392.09 = 84,088.59/x
  3. Step 3: Cross multiply
    178,928.01x = 268,392.09 × 84,088.59
  4. Step 4: Simplify right side
    178,928.01x = 22,568,712,415.25
  5. Step 5: Solve for x
    x = 22,568,712,415.25/178,928.01
  6. Step 6: Final answer
    x = 126,132.92

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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.