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Finding the Fourth Proportional to 59,896.80, 89,715.60 and 53,330.40

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Solution

The fourth proportional to 59,896.80, 89,715.60 and 53,330.40 is: 79,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,896.80 : 89,715.60 = 53,330.40 : x
  2. Step 2: Convert to fraction form
    59,896.80/89,715.60 = 53,330.40/x
  3. Step 3: Cross multiply
    59,896.80x = 89,715.60 × 53,330.40
  4. Step 4: Simplify right side
    59,896.80x = 4,784,568,834.24
  5. Step 5: Solve for x
    x = 4,784,568,834.24/59,896.80
  6. Step 6: Final answer
    x = 79,880.21

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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.