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Finding the Fourth Proportional to 124,646, 172,012.32 and 68,058.08

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Solution

The fourth proportional to 124,646, 172,012.32 and 68,058.08 is: 93,920.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,646 : 172,012.32 = 68,058.08 : x
  2. Step 2: Convert to fraction form
    124,646/172,012.32 = 68,058.08/x
  3. Step 3: Cross multiply
    124,646x = 172,012.32 × 68,058.08
  4. Step 4: Simplify right side
    124,646x = 11,706,828,235.55
  5. Step 5: Solve for x
    x = 11,706,828,235.55/124,646
  6. Step 6: Final answer
    x = 93,920.61

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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.