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Finding the Fourth Proportional to 351,027.40, 526,541.10 and 291,978.40

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Solution

The fourth proportional to 351,027.40, 526,541.10 and 291,978.40 is: 437,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,027.40 : 526,541.10 = 291,978.40 : x
  2. Step 2: Convert to fraction form
    351,027.40/526,541.10 = 291,978.40/x
  3. Step 3: Cross multiply
    351,027.40x = 526,541.10 × 291,978.40
  4. Step 4: Simplify right side
    351,027.40x = 153,738,627,912.24
  5. Step 5: Solve for x
    x = 153,738,627,912.24/351,027.40
  6. Step 6: Final answer
    x = 437,967.60

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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.