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Finding the Fourth Proportional to 640,763.53, 961,002.77 and 185,255.30

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Solution

The fourth proportional to 640,763.53, 961,002.77 and 185,255.30 is: 277,841.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,763.53 : 961,002.77 = 185,255.30 : x
  2. Step 2: Convert to fraction form
    640,763.53/961,002.77 = 185,255.30/x
  3. Step 3: Cross multiply
    640,763.53x = 961,002.77 × 185,255.30
  4. Step 4: Simplify right side
    640,763.53x = 178,030,857,933.41
  5. Step 5: Solve for x
    x = 178,030,857,933.41/640,763.53
  6. Step 6: Final answer
    x = 277,841.75

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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.