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Finding the Fourth Proportional to 239,603.16, 359,402.58 and 91,859.16

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Solution

The fourth proportional to 239,603.16, 359,402.58 and 91,859.16 is: 137,787.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,603.16 : 359,402.58 = 91,859.16 : x
  2. Step 2: Convert to fraction form
    239,603.16/359,402.58 = 91,859.16/x
  3. Step 3: Cross multiply
    239,603.16x = 359,402.58 × 91,859.16
  4. Step 4: Simplify right side
    239,603.16x = 33,014,419,100.63
  5. Step 5: Solve for x
    x = 33,014,419,100.63/239,603.16
  6. Step 6: Final answer
    x = 137,787.91

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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.