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Finding the Fourth Proportional to 66,910.96, 92,334 and 38,625.76

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Solution

The fourth proportional to 66,910.96, 92,334 and 38,625.76 is: 53,301.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.96 : 92,334 = 38,625.76 : x
  2. Step 2: Convert to fraction form
    66,910.96/92,334 = 38,625.76/x
  3. Step 3: Cross multiply
    66,910.96x = 92,334 × 38,625.76
  4. Step 4: Simplify right side
    66,910.96x = 3,566,470,923.84
  5. Step 5: Solve for x
    x = 3,566,470,923.84/66,910.96
  6. Step 6: Final answer
    x = 53,301.74

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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.