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Finding the Fourth Proportional to 85,817.54, 128,694.71 and 29,643.23

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Solution

The fourth proportional to 85,817.54, 128,694.71 and 29,643.23 is: 44,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,817.54 : 128,694.71 = 29,643.23 : x
  2. Step 2: Convert to fraction form
    85,817.54/128,694.71 = 29,643.23/x
  3. Step 3: Cross multiply
    85,817.54x = 128,694.71 × 29,643.23
  4. Step 4: Simplify right side
    85,817.54x = 3,814,927,284.16
  5. Step 5: Solve for x
    x = 3,814,927,284.16/85,817.54
  6. Step 6: Final answer
    x = 44,453.93

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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.