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Finding the Fourth Proportional to 484,408.40, 725,921.40 and 357,054.80

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Solution

The fourth proportional to 484,408.40, 725,921.40 and 357,054.80 is: 535,072.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,408.40 : 725,921.40 = 357,054.80 : x
  2. Step 2: Convert to fraction form
    484,408.40/725,921.40 = 357,054.80/x
  3. Step 3: Cross multiply
    484,408.40x = 725,921.40 × 357,054.80
  4. Step 4: Simplify right side
    484,408.40x = 259,193,720,292.72
  5. Step 5: Solve for x
    x = 259,193,720,292.72/484,408.40
  6. Step 6: Final answer
    x = 535,072.72

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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.