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Finding the Fourth Proportional to 125,409.72, 173,064.43 and 68,049.10

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Solution

The fourth proportional to 125,409.72, 173,064.43 and 68,049.10 is: 93,907.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,409.72 : 173,064.43 = 68,049.10 : x
  2. Step 2: Convert to fraction form
    125,409.72/173,064.43 = 68,049.10/x
  3. Step 3: Cross multiply
    125,409.72x = 173,064.43 × 68,049.10
  4. Step 4: Simplify right side
    125,409.72x = 11,776,878,703.51
  5. Step 5: Solve for x
    x = 11,776,878,703.51/125,409.72
  6. Step 6: Final answer
    x = 93,907.22

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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.