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Finding the Fourth Proportional to 65,059.55, 89,777.21 and 39,562.40

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Solution

The fourth proportional to 65,059.55, 89,777.21 and 39,562.40 is: 54,593.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,059.55 : 89,777.21 = 39,562.40 : x
  2. Step 2: Convert to fraction form
    65,059.55/89,777.21 = 39,562.40/x
  3. Step 3: Cross multiply
    65,059.55x = 89,777.21 × 39,562.40
  4. Step 4: Simplify right side
    65,059.55x = 3,551,801,889.58
  5. Step 5: Solve for x
    x = 3,551,801,889.58/65,059.55
  6. Step 6: Final answer
    x = 54,593.09

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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.