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Finding the Fourth Proportional to 66,702.60, 92,038.32 and 41,213.12

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Solution

The fourth proportional to 66,702.60, 92,038.32 and 41,213.12 is: 56,867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,702.60 : 92,038.32 = 41,213.12 : x
  2. Step 2: Convert to fraction form
    66,702.60/92,038.32 = 41,213.12/x
  3. Step 3: Cross multiply
    66,702.60x = 92,038.32 × 41,213.12
  4. Step 4: Simplify right side
    66,702.60x = 3,793,186,326.76
  5. Step 5: Solve for x
    x = 3,793,186,326.76/66,702.60
  6. Step 6: Final answer
    x = 56,867.14

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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.