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Finding the Fourth Proportional to 403,828.76, 605,073.54 and 245,578.52

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Solution

The fourth proportional to 403,828.76, 605,073.54 and 245,578.52 is: 367,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,828.76 : 605,073.54 = 245,578.52 : x
  2. Step 2: Convert to fraction form
    403,828.76/605,073.54 = 245,578.52/x
  3. Step 3: Cross multiply
    403,828.76x = 605,073.54 × 245,578.52
  4. Step 4: Simplify right side
    403,828.76x = 148,593,064,444.36
  5. Step 5: Solve for x
    x = 148,593,064,444.36/403,828.76
  6. Step 6: Final answer
    x = 367,960.58

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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.