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Finding the Fourth Proportional to 66,907.63, 92,332.43 and 38,613.32

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Solution

The fourth proportional to 66,907.63, 92,332.43 and 38,613.32 is: 53,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,907.63 : 92,332.43 = 38,613.32 : x
  2. Step 2: Convert to fraction form
    66,907.63/92,332.43 = 38,613.32/x
  3. Step 3: Cross multiply
    66,907.63x = 92,332.43 × 38,613.32
  4. Step 4: Simplify right side
    66,907.63x = 3,565,261,665.97
  5. Step 5: Solve for x
    x = 3,565,261,665.97/66,907.63
  6. Step 6: Final answer
    x = 53,286.32

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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.