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Finding the Fourth Proportional to 838,768.85, 1,256,909.11 and 616,064.21

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Solution

The fourth proportional to 838,768.85, 1,256,909.11 and 616,064.21 is: 923,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,768.85 : 1,256,909.11 = 616,064.21 : x
  2. Step 2: Convert to fraction form
    838,768.85/1,256,909.11 = 616,064.21/x
  3. Step 3: Cross multiply
    838,768.85x = 1,256,909.11 × 616,064.21
  4. Step 4: Simplify right side
    838,768.85x = 774,336,714,813.63
  5. Step 5: Solve for x
    x = 774,336,714,813.63/838,768.85
  6. Step 6: Final answer
    x = 923,182.49

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