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Finding the Fourth Proportional to 531,495.30, 734,163.65 and 393,953.06

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Solution

The fourth proportional to 531,495.30, 734,163.65 and 393,953.06 is: 544,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,495.30 : 734,163.65 = 393,953.06 : x
  2. Step 2: Convert to fraction form
    531,495.30/734,163.65 = 393,953.06/x
  3. Step 3: Cross multiply
    531,495.30x = 734,163.65 × 393,953.06
  4. Step 4: Simplify right side
    531,495.30x = 289,226,010,817.69
  5. Step 5: Solve for x
    x = 289,226,010,817.69/531,495.30
  6. Step 6: Final answer
    x = 544,174.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.