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Finding the Fourth Proportional to 626,640.96, 864,777.96 and 354,709.20

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Solution

The fourth proportional to 626,640.96, 864,777.96 and 354,709.20 is: 489,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,640.96 : 864,777.96 = 354,709.20 : x
  2. Step 2: Convert to fraction form
    626,640.96/864,777.96 = 354,709.20/x
  3. Step 3: Cross multiply
    626,640.96x = 864,777.96 × 354,709.20
  4. Step 4: Simplify right side
    626,640.96x = 306,744,698,369.23
  5. Step 5: Solve for x
    x = 306,744,698,369.23/626,640.96
  6. Step 6: Final answer
    x = 489,506.30

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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.