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Finding the Fourth Proportional to 641,265.53, 961,897.55 and 257,187.69

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Solution

The fourth proportional to 641,265.53, 961,897.55 and 257,187.69 is: 385,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,265.53 : 961,897.55 = 257,187.69 : x
  2. Step 2: Convert to fraction form
    641,265.53/961,897.55 = 257,187.69/x
  3. Step 3: Cross multiply
    641,265.53x = 961,897.55 × 257,187.69
  4. Step 4: Simplify right side
    641,265.53x = 247,388,207,615.22
  5. Step 5: Solve for x
    x = 247,388,207,615.22/641,265.53
  6. Step 6: Final answer
    x = 385,781.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.