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Finding the Fourth Proportional to 99,576.88, 137,353.32 and 59,260.55

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Solution

The fourth proportional to 99,576.88, 137,353.32 and 59,260.55 is: 81,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,576.88 : 137,353.32 = 59,260.55 : x
  2. Step 2: Convert to fraction form
    99,576.88/137,353.32 = 59,260.55/x
  3. Step 3: Cross multiply
    99,576.88x = 137,353.32 × 59,260.55
  4. Step 4: Simplify right side
    99,576.88x = 8,139,632,600.76
  5. Step 5: Solve for x
    x = 8,139,632,600.76/99,576.88
  6. Step 6: Final answer
    x = 81,742.20

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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.