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Finding the Fourth Proportional to 62,688.70, 86,487.71 and 41,190.02

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Solution

The fourth proportional to 62,688.70, 86,487.71 and 41,190.02 is: 56,827.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,688.70 : 86,487.71 = 41,190.02 : x
  2. Step 2: Convert to fraction form
    62,688.70/86,487.71 = 41,190.02/x
  3. Step 3: Cross multiply
    62,688.70x = 86,487.71 × 41,190.02
  4. Step 4: Simplify right side
    62,688.70x = 3,562,430,298.70
  5. Step 5: Solve for x
    x = 3,562,430,298.70/62,688.70
  6. Step 6: Final answer
    x = 56,827.31

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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.