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Finding the Fourth Proportional to 66,870.50, 92,284.11 and 38,194.88

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Solution

The fourth proportional to 66,870.50, 92,284.11 and 38,194.88 is: 52,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.50 : 92,284.11 = 38,194.88 : x
  2. Step 2: Convert to fraction form
    66,870.50/92,284.11 = 38,194.88/x
  3. Step 3: Cross multiply
    66,870.50x = 92,284.11 × 38,194.88
  4. Step 4: Simplify right side
    66,870.50x = 3,524,780,045.94
  5. Step 5: Solve for x
    x = 3,524,780,045.94/66,870.50
  6. Step 6: Final answer
    x = 52,710.54

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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.