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Finding the Fourth Proportional to 91,576.56, 137,575.44 and 64,620.98

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Solution

The fourth proportional to 91,576.56, 137,575.44 and 64,620.98 is: 97,080.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,576.56 : 137,575.44 = 64,620.98 : x
  2. Step 2: Convert to fraction form
    91,576.56/137,575.44 = 64,620.98/x
  3. Step 3: Cross multiply
    91,576.56x = 137,575.44 × 64,620.98
  4. Step 4: Simplify right side
    91,576.56x = 8,890,259,068.85
  5. Step 5: Solve for x
    x = 8,890,259,068.85/91,576.56
  6. Step 6: Final answer
    x = 97,080.07

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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.