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Finding the Fourth Proportional to 62,254.99, 85,939.72 and 42,172.86

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Solution

The fourth proportional to 62,254.99, 85,939.72 and 42,172.86 is: 58,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,254.99 : 85,939.72 = 42,172.86 : x
  2. Step 2: Convert to fraction form
    62,254.99/85,939.72 = 42,172.86/x
  3. Step 3: Cross multiply
    62,254.99x = 85,939.72 × 42,172.86
  4. Step 4: Simplify right side
    62,254.99x = 3,624,323,996.84
  5. Step 5: Solve for x
    x = 3,624,323,996.84/62,254.99
  6. Step 6: Final answer
    x = 58,217.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.