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Finding the Fourth Proportional to 686,198.76, 944,840.98 and 609,584.52

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Solution

The fourth proportional to 686,198.76, 944,840.98 and 609,584.52 is: 839,349.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,198.76 : 944,840.98 = 609,584.52 : x
  2. Step 2: Convert to fraction form
    686,198.76/944,840.98 = 609,584.52/x
  3. Step 3: Cross multiply
    686,198.76x = 944,840.98 × 609,584.52
  4. Step 4: Simplify right side
    686,198.76x = 575,960,435,269.63
  5. Step 5: Solve for x
    x = 575,960,435,269.63/686,198.76
  6. Step 6: Final answer
    x = 839,349.28

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Double scale
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1.5x scale

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.