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Finding the Fourth Proportional to 113,509.86, 156,644.66 and 62,522.78

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Solution

The fourth proportional to 113,509.86, 156,644.66 and 62,522.78 is: 86,282.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,509.86 : 156,644.66 = 62,522.78 : x
  2. Step 2: Convert to fraction form
    113,509.86/156,644.66 = 62,522.78/x
  3. Step 3: Cross multiply
    113,509.86x = 156,644.66 × 62,522.78
  4. Step 4: Simplify right side
    113,509.86x = 9,793,858,519.52
  5. Step 5: Solve for x
    x = 9,793,858,519.52/113,509.86
  6. Step 6: Final answer
    x = 86,282.01

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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.