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Finding the Fourth Proportional to 71,694.18, 98,911.53 and 43,389.54

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Solution

The fourth proportional to 71,694.18, 98,911.53 and 43,389.54 is: 59,861.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,694.18 : 98,911.53 = 43,389.54 : x
  2. Step 2: Convert to fraction form
    71,694.18/98,911.53 = 43,389.54/x
  3. Step 3: Cross multiply
    71,694.18x = 98,911.53 × 43,389.54
  4. Step 4: Simplify right side
    71,694.18x = 4,291,725,787.40
  5. Step 5: Solve for x
    x = 4,291,725,787.40/71,694.18
  6. Step 6: Final answer
    x = 59,861.56

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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.