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Finding the Fourth Proportional to 400,923.40, 601,385.10 and 164,435.80

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Solution

The fourth proportional to 400,923.40, 601,385.10 and 164,435.80 is: 246,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,923.40 : 601,385.10 = 164,435.80 : x
  2. Step 2: Convert to fraction form
    400,923.40/601,385.10 = 164,435.80/x
  3. Step 3: Cross multiply
    400,923.40x = 601,385.10 × 164,435.80
  4. Step 4: Simplify right side
    400,923.40x = 98,889,240,026.58
  5. Step 5: Solve for x
    x = 98,889,240,026.58/400,923.40
  6. Step 6: Final answer
    x = 246,653.70

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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.