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Finding the Fourth Proportional to 523,490.66, 785,900.41 and 445,103.11

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Solution

The fourth proportional to 523,490.66, 785,900.41 and 445,103.11 is: 668,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,490.66 : 785,900.41 = 445,103.11 : x
  2. Step 2: Convert to fraction form
    523,490.66/785,900.41 = 445,103.11/x
  3. Step 3: Cross multiply
    523,490.66x = 785,900.41 × 445,103.11
  4. Step 4: Simplify right side
    523,490.66x = 349,806,718,415.56
  5. Step 5: Solve for x
    x = 349,806,718,415.56/523,490.66
  6. Step 6: Final answer
    x = 668,219.60

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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.