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Finding the Fourth Proportional to 451,000, 622,399.80 and 249,796

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Solution

The fourth proportional to 451,000, 622,399.80 and 249,796 is: 344,729.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,000 : 622,399.80 = 249,796 : x
  2. Step 2: Convert to fraction form
    451,000/622,399.80 = 249,796/x
  3. Step 3: Cross multiply
    451,000x = 622,399.80 × 249,796
  4. Step 4: Simplify right side
    451,000x = 155,472,980,440.80
  5. Step 5: Solve for x
    x = 155,472,980,440.80/451,000
  6. Step 6: Final answer
    x = 344,729.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.