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Finding the Fourth Proportional to 349,078.05, 523,602.45 and 112,415.49

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Solution

The fourth proportional to 349,078.05, 523,602.45 and 112,415.49 is: 168,618.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,078.05 : 523,602.45 = 112,415.49 : x
  2. Step 2: Convert to fraction form
    349,078.05/523,602.45 = 112,415.49/x
  3. Step 3: Cross multiply
    349,078.05x = 523,602.45 × 112,415.49
  4. Step 4: Simplify right side
    349,078.05x = 58,861,025,981.95
  5. Step 5: Solve for x
    x = 58,861,025,981.95/349,078.05
  6. Step 6: Final answer
    x = 168,618.53

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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.