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Finding the Fourth Proportional to 505,869.67, 698,091.71 and 276,421.92

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Solution

The fourth proportional to 505,869.67, 698,091.71 and 276,421.92 is: 381,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,869.67 : 698,091.71 = 276,421.92 : x
  2. Step 2: Convert to fraction form
    505,869.67/698,091.71 = 276,421.92/x
  3. Step 3: Cross multiply
    505,869.67x = 698,091.71 × 276,421.92
  4. Step 4: Simplify right side
    505,869.67x = 192,967,850,814.28
  5. Step 5: Solve for x
    x = 192,967,850,814.28/505,869.67
  6. Step 6: Final answer
    x = 381,457.64

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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.