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Finding the Fourth Proportional to 77,068.13, 115,602.19 and 21,664.13

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Solution

The fourth proportional to 77,068.13, 115,602.19 and 21,664.13 is: 32,496.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.13 : 115,602.19 = 21,664.13 : x
  2. Step 2: Convert to fraction form
    77,068.13/115,602.19 = 21,664.13/x
  3. Step 3: Cross multiply
    77,068.13x = 115,602.19 × 21,664.13
  4. Step 4: Simplify right side
    77,068.13x = 2,504,420,240.27
  5. Step 5: Solve for x
    x = 2,504,420,240.27/77,068.13
  6. Step 6: Final answer
    x = 32,496.19

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.