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Finding the Fourth Proportional to 75,398.94, 104,058.86 and 43,136.55

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Solution

The fourth proportional to 75,398.94, 104,058.86 and 43,136.55 is: 59,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,398.94 : 104,058.86 = 43,136.55 : x
  2. Step 2: Convert to fraction form
    75,398.94/104,058.86 = 43,136.55/x
  3. Step 3: Cross multiply
    75,398.94x = 104,058.86 × 43,136.55
  4. Step 4: Simplify right side
    75,398.94x = 4,488,740,001.65
  5. Step 5: Solve for x
    x = 4,488,740,001.65/75,398.94
  6. Step 6: Final answer
    x = 59,533.20

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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.