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Finding the Fourth Proportional to 125,176, 172,742.98 and 68,587.37

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Solution

The fourth proportional to 125,176, 172,742.98 and 68,587.37 is: 94,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,176 : 172,742.98 = 68,587.37 : x
  2. Step 2: Convert to fraction form
    125,176/172,742.98 = 68,587.37/x
  3. Step 3: Cross multiply
    125,176x = 172,742.98 × 68,587.37
  4. Step 4: Simplify right side
    125,176x = 11,847,986,684.16
  5. Step 5: Solve for x
    x = 11,847,986,684.16/125,176
  6. Step 6: Final answer
    x = 94,650.63

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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.