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Finding the Fourth Proportional to 173,838.90, 260,758.35 and 68,603.70

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Solution

The fourth proportional to 173,838.90, 260,758.35 and 68,603.70 is: 102,905.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,838.90 : 260,758.35 = 68,603.70 : x
  2. Step 2: Convert to fraction form
    173,838.90/260,758.35 = 68,603.70/x
  3. Step 3: Cross multiply
    173,838.90x = 260,758.35 × 68,603.70
  4. Step 4: Simplify right side
    173,838.90x = 17,888,987,615.90
  5. Step 5: Solve for x
    x = 17,888,987,615.90/173,838.90
  6. Step 6: Final answer
    x = 102,905.55

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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.