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Finding the Fourth Proportional to 103,578.16, 155,376.12 and 44,399.80

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Solution

The fourth proportional to 103,578.16, 155,376.12 and 44,399.80 is: 66,603.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,578.16 : 155,376.12 = 44,399.80 : x
  2. Step 2: Convert to fraction form
    103,578.16/155,376.12 = 44,399.80/x
  3. Step 3: Cross multiply
    103,578.16x = 155,376.12 × 44,399.80
  4. Step 4: Simplify right side
    103,578.16x = 6,898,668,652.78
  5. Step 5: Solve for x
    x = 6,898,668,652.78/103,578.16
  6. Step 6: Final answer
    x = 66,603.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.