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Finding the Fourth Proportional to 626,511.60, 939,767.40 and 205,801.20

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Solution

The fourth proportional to 626,511.60, 939,767.40 and 205,801.20 is: 308,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,511.60 : 939,767.40 = 205,801.20 : x
  2. Step 2: Convert to fraction form
    626,511.60/939,767.40 = 205,801.20/x
  3. Step 3: Cross multiply
    626,511.60x = 939,767.40 × 205,801.20
  4. Step 4: Simplify right side
    626,511.60x = 193,405,258,640.88
  5. Step 5: Solve for x
    x = 193,405,258,640.88/626,511.60
  6. Step 6: Final answer
    x = 308,701.80

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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.