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Finding the Fourth Proportional to 294,666.40, 441,918.72 and 81,383.32

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Solution

The fourth proportional to 294,666.40, 441,918.72 and 81,383.32 is: 122,052.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,666.40 : 441,918.72 = 81,383.32 : x
  2. Step 2: Convert to fraction form
    294,666.40/441,918.72 = 81,383.32/x
  3. Step 3: Cross multiply
    294,666.40x = 441,918.72 × 81,383.32
  4. Step 4: Simplify right side
    294,666.40x = 35,964,812,603.75
  5. Step 5: Solve for x
    x = 35,964,812,603.75/294,666.40
  6. Step 6: Final answer
    x = 122,052.64

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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.