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Finding the Fourth Proportional to 591,817.68, 816,478.92 and 376,919.28

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Solution

The fourth proportional to 591,817.68, 816,478.92 and 376,919.28 is: 520,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,817.68 : 816,478.92 = 376,919.28 : x
  2. Step 2: Convert to fraction form
    591,817.68/816,478.92 = 376,919.28/x
  3. Step 3: Cross multiply
    591,817.68x = 816,478.92 × 376,919.28
  4. Step 4: Simplify right side
    591,817.68x = 307,746,646,661.58
  5. Step 5: Solve for x
    x = 307,746,646,661.58/591,817.68
  6. Step 6: Final answer
    x = 520,002.46

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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.