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Finding the Fourth Proportional to 647,674.20, 971,511.30 and 605,683.80

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Solution

The fourth proportional to 647,674.20, 971,511.30 and 605,683.80 is: 908,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,674.20 : 971,511.30 = 605,683.80 : x
  2. Step 2: Convert to fraction form
    647,674.20/971,511.30 = 605,683.80/x
  3. Step 3: Cross multiply
    647,674.20x = 971,511.30 × 605,683.80
  4. Step 4: Simplify right side
    647,674.20x = 588,428,655,926.94
  5. Step 5: Solve for x
    x = 588,428,655,926.94/647,674.20
  6. Step 6: Final answer
    x = 908,525.70

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Similar ratio
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1.5x scale

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.