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Finding the Fourth Proportional to 331,155, 496,806.54 and 120,792.93

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Solution

The fourth proportional to 331,155, 496,806.54 and 120,792.93 is: 181,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,155 : 496,806.54 = 120,792.93 : x
  2. Step 2: Convert to fraction form
    331,155/496,806.54 = 120,792.93/x
  3. Step 3: Cross multiply
    331,155x = 496,806.54 × 120,792.93
  4. Step 4: Simplify right side
    331,155x = 60,010,717,609.76
  5. Step 5: Solve for x
    x = 60,010,717,609.76/331,155
  6. Step 6: Final answer
    x = 181,216.40

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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.