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Finding the Fourth Proportional to 78,124.41, 107,809.66 and 44,136.41

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Solution

The fourth proportional to 78,124.41, 107,809.66 and 44,136.41 is: 60,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.41 : 107,809.66 = 44,136.41 : x
  2. Step 2: Convert to fraction form
    78,124.41/107,809.66 = 44,136.41/x
  3. Step 3: Cross multiply
    78,124.41x = 107,809.66 × 44,136.41
  4. Step 4: Simplify right side
    78,124.41x = 4,758,330,871.84
  5. Step 5: Solve for x
    x = 4,758,330,871.84/78,124.41
  6. Step 6: Final answer
    x = 60,907.10

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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.