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Finding the Fourth Proportional to 55,056.40, 82,568.40 and 15,616.96

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Solution

The fourth proportional to 55,056.40, 82,568.40 and 15,616.96 is: 23,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,056.40 : 82,568.40 = 15,616.96 : x
  2. Step 2: Convert to fraction form
    55,056.40/82,568.40 = 15,616.96/x
  3. Step 3: Cross multiply
    55,056.40x = 82,568.40 × 15,616.96
  4. Step 4: Simplify right side
    55,056.40x = 1,289,467,400.06
  5. Step 5: Solve for x
    x = 1,289,467,400.06/55,056.40
  6. Step 6: Final answer
    x = 23,420.84

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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.