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Finding the Fourth Proportional to 125,191.41, 172,764.16 and 68,601.57

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Solution

The fourth proportional to 125,191.41, 172,764.16 and 68,601.57 is: 94,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,191.41 : 172,764.16 = 68,601.57 : x
  2. Step 2: Convert to fraction form
    125,191.41/172,764.16 = 68,601.57/x
  3. Step 3: Cross multiply
    125,191.41x = 172,764.16 × 68,601.57
  4. Step 4: Simplify right side
    125,191.41x = 11,851,891,796.36
  5. Step 5: Solve for x
    x = 11,851,891,796.36/125,191.41
  6. Step 6: Final answer
    x = 94,670.17

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1.5x scale

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.