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Finding the Fourth Proportional to 71,205.70, 106,808.55 and 59,628.10

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Solution

The fourth proportional to 71,205.70, 106,808.55 and 59,628.10 is: 89,442.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,205.70 : 106,808.55 = 59,628.10 : x
  2. Step 2: Convert to fraction form
    71,205.70/106,808.55 = 59,628.10/x
  3. Step 3: Cross multiply
    71,205.70x = 106,808.55 × 59,628.10
  4. Step 4: Simplify right side
    71,205.70x = 6,368,790,900.26
  5. Step 5: Solve for x
    x = 6,368,790,900.26/71,205.70
  6. Step 6: Final answer
    x = 89,442.15

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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.