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Finding the Fourth Proportional to 62,720.72, 86,555.25 and 34,040.63

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Solution

The fourth proportional to 62,720.72, 86,555.25 and 34,040.63 is: 46,976.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,720.72 : 86,555.25 = 34,040.63 : x
  2. Step 2: Convert to fraction form
    62,720.72/86,555.25 = 34,040.63/x
  3. Step 3: Cross multiply
    62,720.72x = 86,555.25 × 34,040.63
  4. Step 4: Simplify right side
    62,720.72x = 2,946,395,239.81
  5. Step 5: Solve for x
    x = 2,946,395,239.81/62,720.72
  6. Step 6: Final answer
    x = 46,976.43

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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.