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Finding the Fourth Proportional to 403,897.40, 605,846.10 and 372,404.60

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Solution

The fourth proportional to 403,897.40, 605,846.10 and 372,404.60 is: 558,606.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,897.40 : 605,846.10 = 372,404.60 : x
  2. Step 2: Convert to fraction form
    403,897.40/605,846.10 = 372,404.60/x
  3. Step 3: Cross multiply
    403,897.40x = 605,846.10 × 372,404.60
  4. Step 4: Simplify right side
    403,897.40x = 225,619,874,532.06
  5. Step 5: Solve for x
    x = 225,619,874,532.06/403,897.40
  6. Step 6: Final answer
    x = 558,606.90

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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.