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Finding the Fourth Proportional to 104,199.94, 143,743.07 and 65,894.94

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Solution

The fourth proportional to 104,199.94, 143,743.07 and 65,894.94 is: 90,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,199.94 : 143,743.07 = 65,894.94 : x
  2. Step 2: Convert to fraction form
    104,199.94/143,743.07 = 65,894.94/x
  3. Step 3: Cross multiply
    104,199.94x = 143,743.07 × 65,894.94
  4. Step 4: Simplify right side
    104,199.94x = 9,471,940,973.07
  5. Step 5: Solve for x
    x = 9,471,940,973.07/104,199.94
  6. Step 6: Final answer
    x = 90,901.60

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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.