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Finding the Fourth Proportional to 66,814.01, 92,200.32 and 39,971.32

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Solution

The fourth proportional to 66,814.01, 92,200.32 and 39,971.32 is: 55,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,814.01 : 92,200.32 = 39,971.32 : x
  2. Step 2: Convert to fraction form
    66,814.01/92,200.32 = 39,971.32/x
  3. Step 3: Cross multiply
    66,814.01x = 92,200.32 × 39,971.32
  4. Step 4: Simplify right side
    66,814.01x = 3,685,368,294.97
  5. Step 5: Solve for x
    x = 3,685,368,294.97/66,814.01
  6. Step 6: Final answer
    x = 55,158.61

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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.