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Finding the Fourth Proportional to 400,847.40, 601,271.10 and 374,603.40

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Solution

The fourth proportional to 400,847.40, 601,271.10 and 374,603.40 is: 561,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,847.40 : 601,271.10 = 374,603.40 : x
  2. Step 2: Convert to fraction form
    400,847.40/601,271.10 = 374,603.40/x
  3. Step 3: Cross multiply
    400,847.40x = 601,271.10 × 374,603.40
  4. Step 4: Simplify right side
    400,847.40x = 225,238,198,381.74
  5. Step 5: Solve for x
    x = 225,238,198,381.74/400,847.40
  6. Step 6: Final answer
    x = 561,905.10

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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.