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Finding the Fourth Proportional to 622,812.84, 934,219.80 and 445,665.84

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Solution

The fourth proportional to 622,812.84, 934,219.80 and 445,665.84 is: 668,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,812.84 : 934,219.80 = 445,665.84 : x
  2. Step 2: Convert to fraction form
    622,812.84/934,219.80 = 445,665.84/x
  3. Step 3: Cross multiply
    622,812.84x = 934,219.80 × 445,665.84
  4. Step 4: Simplify right side
    622,812.84x = 416,349,851,911.63
  5. Step 5: Solve for x
    x = 416,349,851,911.63/622,812.84
  6. Step 6: Final answer
    x = 668,499.15

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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.