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Finding the Fourth Proportional to 159,078.51, 238,790.67 and 64,373.90

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Solution

The fourth proportional to 159,078.51, 238,790.67 and 64,373.90 is: 96,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,078.51 : 238,790.67 = 64,373.90 : x
  2. Step 2: Convert to fraction form
    159,078.51/238,790.67 = 64,373.90/x
  3. Step 3: Cross multiply
    159,078.51x = 238,790.67 × 64,373.90
  4. Step 4: Simplify right side
    159,078.51x = 15,371,885,276.16
  5. Step 5: Solve for x
    x = 15,371,885,276.16/159,078.51
  6. Step 6: Final answer
    x = 96,630.81

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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.