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Finding the Fourth Proportional to 668,991.76, 923,209.11 and 363,068.07

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Solution

The fourth proportional to 668,991.76, 923,209.11 and 363,068.07 is: 501,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,991.76 : 923,209.11 = 363,068.07 : x
  2. Step 2: Convert to fraction form
    668,991.76/923,209.11 = 363,068.07/x
  3. Step 3: Cross multiply
    668,991.76x = 923,209.11 × 363,068.07
  4. Step 4: Simplify right side
    668,991.76x = 335,187,748,675.18
  5. Step 5: Solve for x
    x = 335,187,748,675.18/668,991.76
  6. Step 6: Final answer
    x = 501,034.19

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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.