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Finding the Fourth Proportional to 985,940, 1,360,597.20 and 533,231

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Solution

The fourth proportional to 985,940, 1,360,597.20 and 533,231 is: 735,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,940 : 1,360,597.20 = 533,231 : x
  2. Step 2: Convert to fraction form
    985,940/1,360,597.20 = 533,231/x
  3. Step 3: Cross multiply
    985,940x = 1,360,597.20 × 533,231
  4. Step 4: Simplify right side
    985,940x = 725,512,605,553.20
  5. Step 5: Solve for x
    x = 725,512,605,553.20/985,940
  6. Step 6: Final answer
    x = 735,858.78

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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.