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Finding the Fourth Proportional to 697,094.75, 961,988.04 and 391,170.42

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Solution

The fourth proportional to 697,094.75, 961,988.04 and 391,170.42 is: 539,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,094.75 : 961,988.04 = 391,170.42 : x
  2. Step 2: Convert to fraction form
    697,094.75/961,988.04 = 391,170.42/x
  3. Step 3: Cross multiply
    697,094.75x = 961,988.04 × 391,170.42
  4. Step 4: Simplify right side
    697,094.75x = 376,301,265,641.78
  5. Step 5: Solve for x
    x = 376,301,265,641.78/697,094.75
  6. Step 6: Final answer
    x = 539,813.66

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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.