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Finding the Fourth Proportional to 61,448.62, 84,809.92 and 58,643.82

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Solution

The fourth proportional to 61,448.62, 84,809.92 and 58,643.82 is: 80,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,448.62 : 84,809.92 = 58,643.82 : x
  2. Step 2: Convert to fraction form
    61,448.62/84,809.92 = 58,643.82/x
  3. Step 3: Cross multiply
    61,448.62x = 84,809.92 × 58,643.82
  4. Step 4: Simplify right side
    61,448.62x = 4,973,577,682.69
  5. Step 5: Solve for x
    x = 4,973,577,682.69/61,448.62
  6. Step 6: Final answer
    x = 80,938.80

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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.