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Finding the Fourth Proportional to 52,439.88, 78,653.70 and 15,501

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Solution

The fourth proportional to 52,439.88, 78,653.70 and 15,501 is: 23,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,439.88 : 78,653.70 = 15,501 : x
  2. Step 2: Convert to fraction form
    52,439.88/78,653.70 = 15,501/x
  3. Step 3: Cross multiply
    52,439.88x = 78,653.70 × 15,501
  4. Step 4: Simplify right side
    52,439.88x = 1,219,211,003.70
  5. Step 5: Solve for x
    x = 1,219,211,003.70/52,439.88
  6. Step 6: Final answer
    x = 23,249.69

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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.