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Finding the Fourth Proportional to 400,962.69, 601,443.78 and 374,390.64

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Solution

The fourth proportional to 400,962.69, 601,443.78 and 374,390.64 is: 561,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,962.69 : 601,443.78 = 374,390.64 : x
  2. Step 2: Convert to fraction form
    400,962.69/601,443.78 = 374,390.64/x
  3. Step 3: Cross multiply
    400,962.69x = 601,443.78 × 374,390.64
  4. Step 4: Simplify right side
    400,962.69x = 225,174,921,718.22
  5. Step 5: Solve for x
    x = 225,174,921,718.22/400,962.69
  6. Step 6: Final answer
    x = 561,585.72

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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.