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Finding the Fourth Proportional to 92,513.57, 127,671.05 and 56,723.31

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Solution

The fourth proportional to 92,513.57, 127,671.05 and 56,723.31 is: 78,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,513.57 : 127,671.05 = 56,723.31 : x
  2. Step 2: Convert to fraction form
    92,513.57/127,671.05 = 56,723.31/x
  3. Step 3: Cross multiply
    92,513.57x = 127,671.05 × 56,723.31
  4. Step 4: Simplify right side
    92,513.57x = 7,241,924,688.98
  5. Step 5: Solve for x
    x = 7,241,924,688.98/92,513.57
  6. Step 6: Final answer
    x = 78,279.60

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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.