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Finding the Fourth Proportional to 173,619.15, 260,428.73 and 103,635.15

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Solution

The fourth proportional to 173,619.15, 260,428.73 and 103,635.15 is: 155,452.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,619.15 : 260,428.73 = 103,635.15 : x
  2. Step 2: Convert to fraction form
    173,619.15/260,428.73 = 103,635.15/x
  3. Step 3: Cross multiply
    173,619.15x = 260,428.73 × 103,635.15
  4. Step 4: Simplify right side
    173,619.15x = 26,989,570,497.86
  5. Step 5: Solve for x
    x = 26,989,570,497.86/173,619.15
  6. Step 6: Final answer
    x = 155,452.73

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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.