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Finding the Fourth Proportional to 347,696.12, 520,882.14 and 198,039.72

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Solution

The fourth proportional to 347,696.12, 520,882.14 and 198,039.72 is: 296,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,696.12 : 520,882.14 = 198,039.72 : x
  2. Step 2: Convert to fraction form
    347,696.12/520,882.14 = 198,039.72/x
  3. Step 3: Cross multiply
    347,696.12x = 520,882.14 × 198,039.72
  4. Step 4: Simplify right side
    347,696.12x = 103,155,353,158.60
  5. Step 5: Solve for x
    x = 103,155,353,158.60/347,696.12
  6. Step 6: Final answer
    x = 296,682.50

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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.