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Finding the Fourth Proportional to 464,965.20, 697,447.80 and 405,916.20

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Solution

The fourth proportional to 464,965.20, 697,447.80 and 405,916.20 is: 608,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,965.20 : 697,447.80 = 405,916.20 : x
  2. Step 2: Convert to fraction form
    464,965.20/697,447.80 = 405,916.20/x
  3. Step 3: Cross multiply
    464,965.20x = 697,447.80 × 405,916.20
  4. Step 4: Simplify right side
    464,965.20x = 283,105,360,674.36
  5. Step 5: Solve for x
    x = 283,105,360,674.36/464,965.20
  6. Step 6: Final answer
    x = 608,874.30

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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.