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Finding the Fourth Proportional to 353,035.71, 529,243.12 and 139,953.30

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Solution

The fourth proportional to 353,035.71, 529,243.12 and 139,953.30 is: 209,806.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,035.71 : 529,243.12 = 139,953.30 : x
  2. Step 2: Convert to fraction form
    353,035.71/529,243.12 = 139,953.30/x
  3. Step 3: Cross multiply
    353,035.71x = 529,243.12 × 139,953.30
  4. Step 4: Simplify right side
    353,035.71x = 74,069,321,146.30
  5. Step 5: Solve for x
    x = 74,069,321,146.30/353,035.71
  6. Step 6: Final answer
    x = 209,806.88

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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.