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Finding the Fourth Proportional to 351,693.78, 527,541.32 and 85,454.52

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Solution

The fourth proportional to 351,693.78, 527,541.32 and 85,454.52 is: 128,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,693.78 : 527,541.32 = 85,454.52 : x
  2. Step 2: Convert to fraction form
    351,693.78/527,541.32 = 85,454.52/x
  3. Step 3: Cross multiply
    351,693.78x = 527,541.32 × 85,454.52
  4. Step 4: Simplify right side
    351,693.78x = 45,080,790,280.77
  5. Step 5: Solve for x
    x = 45,080,790,280.77/351,693.78
  6. Step 6: Final answer
    x = 128,181.94

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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.