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Finding the Fourth Proportional to 62,386.92, 86,102.73 and 39,718.67

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Solution

The fourth proportional to 62,386.92, 86,102.73 and 39,718.67 is: 54,817.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,386.92 : 86,102.73 = 39,718.67 : x
  2. Step 2: Convert to fraction form
    62,386.92/86,102.73 = 39,718.67/x
  3. Step 3: Cross multiply
    62,386.92x = 86,102.73 × 39,718.67
  4. Step 4: Simplify right side
    62,386.92x = 3,419,885,918.97
  5. Step 5: Solve for x
    x = 3,419,885,918.97/62,386.92
  6. Step 6: Final answer
    x = 54,817.35

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1.5x scale

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.