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Finding the Fourth Proportional to 626,670.28, 864,915.43 and 354,753.64

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Solution

The fourth proportional to 626,670.28, 864,915.43 and 354,753.64 is: 489,622.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,670.28 : 864,915.43 = 354,753.64 : x
  2. Step 2: Convert to fraction form
    626,670.28/864,915.43 = 354,753.64/x
  3. Step 3: Cross multiply
    626,670.28x = 864,915.43 × 354,753.64
  4. Step 4: Simplify right side
    626,670.28x = 306,831,892,760.09
  5. Step 5: Solve for x
    x = 306,831,892,760.09/626,670.28
  6. Step 6: Final answer
    x = 489,622.54

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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.