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Finding the Fourth Proportional to 117,148.21, 175,721.74 and 28,401.73

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Solution

The fourth proportional to 117,148.21, 175,721.74 and 28,401.73 is: 42,602.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,148.21 : 175,721.74 = 28,401.73 : x
  2. Step 2: Convert to fraction form
    117,148.21/175,721.74 = 28,401.73/x
  3. Step 3: Cross multiply
    117,148.21x = 175,721.74 × 28,401.73
  4. Step 4: Simplify right side
    117,148.21x = 4,990,800,904.30
  5. Step 5: Solve for x
    x = 4,990,800,904.30/117,148.21
  6. Step 6: Final answer
    x = 42,602.45

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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.