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Finding the Fourth Proportional to 523,990.42, 786,138.72 and 168,996.58

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Solution

The fourth proportional to 523,990.42, 786,138.72 and 168,996.58 is: 253,544.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,990.42 : 786,138.72 = 168,996.58 : x
  2. Step 2: Convert to fraction form
    523,990.42/786,138.72 = 168,996.58/x
  3. Step 3: Cross multiply
    523,990.42x = 786,138.72 × 168,996.58
  4. Step 4: Simplify right side
    523,990.42x = 132,854,755,085.58
  5. Step 5: Solve for x
    x = 132,854,755,085.58/523,990.42
  6. Step 6: Final answer
    x = 253,544.24

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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.