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Finding the Fourth Proportional to 691,210.86, 953,891.20 and 404,704.14

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Solution

The fourth proportional to 691,210.86, 953,891.20 and 404,704.14 is: 558,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,210.86 : 953,891.20 = 404,704.14 : x
  2. Step 2: Convert to fraction form
    691,210.86/953,891.20 = 404,704.14/x
  3. Step 3: Cross multiply
    691,210.86x = 953,891.20 × 404,704.14
  4. Step 4: Simplify right side
    691,210.86x = 386,043,717,749.57
  5. Step 5: Solve for x
    x = 386,043,717,749.57/691,210.86
  6. Step 6: Final answer
    x = 558,503.55

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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.