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Finding the Fourth Proportional to 620,633.40, 930,950.10 and 199,951.80

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Solution

The fourth proportional to 620,633.40, 930,950.10 and 199,951.80 is: 299,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,633.40 : 930,950.10 = 199,951.80 : x
  2. Step 2: Convert to fraction form
    620,633.40/930,950.10 = 199,951.80/x
  3. Step 3: Cross multiply
    620,633.40x = 930,950.10 × 199,951.80
  4. Step 4: Simplify right side
    620,633.40x = 186,145,148,205.18
  5. Step 5: Solve for x
    x = 186,145,148,205.18/620,633.40
  6. Step 6: Final answer
    x = 299,927.70

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Double scale
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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.