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Finding the Fourth Proportional to 90,352, 124,685.76 and 50,608

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Solution

The fourth proportional to 90,352, 124,685.76 and 50,608 is: 69,839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,352 : 124,685.76 = 50,608 : x
  2. Step 2: Convert to fraction form
    90,352/124,685.76 = 50,608/x
  3. Step 3: Cross multiply
    90,352x = 124,685.76 × 50,608
  4. Step 4: Simplify right side
    90,352x = 6,310,096,942.08
  5. Step 5: Solve for x
    x = 6,310,096,942.08/90,352
  6. Step 6: Final answer
    x = 69,839.04

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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.