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Finding the Fourth Proportional to 351,312.40, 526,968.60 and 327,811.60

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Solution

The fourth proportional to 351,312.40, 526,968.60 and 327,811.60 is: 491,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,312.40 : 526,968.60 = 327,811.60 : x
  2. Step 2: Convert to fraction form
    351,312.40/526,968.60 = 327,811.60/x
  3. Step 3: Cross multiply
    351,312.40x = 526,968.60 × 327,811.60
  4. Step 4: Simplify right side
    351,312.40x = 172,746,419,915.76
  5. Step 5: Solve for x
    x = 172,746,419,915.76/351,312.40
  6. Step 6: Final answer
    x = 491,717.40

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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.