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Finding the Fourth Proportional to 100,763.89, 150,916.06 and 48,210.55

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Solution

The fourth proportional to 100,763.89, 150,916.06 and 48,210.55 is: 72,205.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,763.89 : 150,916.06 = 48,210.55 : x
  2. Step 2: Convert to fraction form
    100,763.89/150,916.06 = 48,210.55/x
  3. Step 3: Cross multiply
    100,763.89x = 150,916.06 × 48,210.55
  4. Step 4: Simplify right side
    100,763.89x = 7,275,746,256.43
  5. Step 5: Solve for x
    x = 7,275,746,256.43/100,763.89
  6. Step 6: Final answer
    x = 72,205.89

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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.