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Finding the Fourth Proportional to 345,695.81, 518,168.88 and 176,984.66

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Solution

The fourth proportional to 345,695.81, 518,168.88 and 176,984.66 is: 265,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,695.81 : 518,168.88 = 176,984.66 : x
  2. Step 2: Convert to fraction form
    345,695.81/518,168.88 = 176,984.66/x
  3. Step 3: Cross multiply
    345,695.81x = 518,168.88 × 176,984.66
  4. Step 4: Simplify right side
    345,695.81x = 91,707,944,344.80
  5. Step 5: Solve for x
    x = 91,707,944,344.80/345,695.81
  6. Step 6: Final answer
    x = 265,285.09

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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.