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Finding the Fourth Proportional to 104,078.65, 143,632.02 and 63,784.63

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Solution

The fourth proportional to 104,078.65, 143,632.02 and 63,784.63 is: 88,024.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,078.65 : 143,632.02 = 63,784.63 : x
  2. Step 2: Convert to fraction form
    104,078.65/143,632.02 = 63,784.63/x
  3. Step 3: Cross multiply
    104,078.65x = 143,632.02 × 63,784.63
  4. Step 4: Simplify right side
    104,078.65x = 9,161,515,251.85
  5. Step 5: Solve for x
    x = 9,161,515,251.85/104,078.65
  6. Step 6: Final answer
    x = 88,024.92

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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.