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Finding the Fourth Proportional to 55,861.80, 83,792.70 and 53,269.80

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Solution

The fourth proportional to 55,861.80, 83,792.70 and 53,269.80 is: 79,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,861.80 : 83,792.70 = 53,269.80 : x
  2. Step 2: Convert to fraction form
    55,861.80/83,792.70 = 53,269.80/x
  3. Step 3: Cross multiply
    55,861.80x = 83,792.70 × 53,269.80
  4. Step 4: Simplify right side
    55,861.80x = 4,463,620,370.46
  5. Step 5: Solve for x
    x = 4,463,620,370.46/55,861.80
  6. Step 6: Final answer
    x = 79,904.70

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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.