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Finding the Fourth Proportional to 62,411.61, 86,128.07 and 34,117.31

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Solution

The fourth proportional to 62,411.61, 86,128.07 and 34,117.31 is: 47,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,411.61 : 86,128.07 = 34,117.31 : x
  2. Step 2: Convert to fraction form
    62,411.61/86,128.07 = 34,117.31/x
  3. Step 3: Cross multiply
    62,411.61x = 86,128.07 × 34,117.31
  4. Step 4: Simplify right side
    62,411.61x = 2,938,457,462.66
  5. Step 5: Solve for x
    x = 2,938,457,462.66/62,411.61
  6. Step 6: Final answer
    x = 47,081.90

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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.