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Finding the Fourth Proportional to 125,515.63, 173,215.56 and 68,927.01

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Solution

The fourth proportional to 125,515.63, 173,215.56 and 68,927.01 is: 95,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,515.63 : 173,215.56 = 68,927.01 : x
  2. Step 2: Convert to fraction form
    125,515.63/173,215.56 = 68,927.01/x
  3. Step 3: Cross multiply
    125,515.63x = 173,215.56 × 68,927.01
  4. Step 4: Simplify right side
    125,515.63x = 11,939,230,636.28
  5. Step 5: Solve for x
    x = 11,939,230,636.28/125,515.63
  6. Step 6: Final answer
    x = 95,121.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.