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Finding the Fourth Proportional to 62,912.64, 86,821.26 and 34,618.32

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Solution

The fourth proportional to 62,912.64, 86,821.26 and 34,618.32 is: 47,774.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,912.64 : 86,821.26 = 34,618.32 : x
  2. Step 2: Convert to fraction form
    62,912.64/86,821.26 = 34,618.32/x
  3. Step 3: Cross multiply
    62,912.64x = 86,821.26 × 34,618.32
  4. Step 4: Simplify right side
    62,912.64x = 3,005,606,161.48
  5. Step 5: Solve for x
    x = 3,005,606,161.48/62,912.64
  6. Step 6: Final answer
    x = 47,774.28

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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.