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Finding the Fourth Proportional to 66,838.86, 92,234.10 and 38,157.39

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Solution

The fourth proportional to 66,838.86, 92,234.10 and 38,157.39 is: 52,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,838.86 : 92,234.10 = 38,157.39 : x
  2. Step 2: Convert to fraction form
    66,838.86/92,234.10 = 38,157.39/x
  3. Step 3: Cross multiply
    66,838.86x = 92,234.10 × 38,157.39
  4. Step 4: Simplify right side
    66,838.86x = 3,519,412,525.00
  5. Step 5: Solve for x
    x = 3,519,412,525.00/66,838.86
  6. Step 6: Final answer
    x = 52,655.18

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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.