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Finding the Fourth Proportional to 310,903.20, 465,577.20 and 248,695.20

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Solution

The fourth proportional to 310,903.20, 465,577.20 and 248,695.20 is: 372,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,903.20 : 465,577.20 = 248,695.20 : x
  2. Step 2: Convert to fraction form
    310,903.20/465,577.20 = 248,695.20/x
  3. Step 3: Cross multiply
    310,903.20x = 465,577.20 × 248,695.20
  4. Step 4: Simplify right side
    310,903.20x = 115,786,814,869.44
  5. Step 5: Solve for x
    x = 115,786,814,869.44/310,903.20
  6. Step 6: Final answer
    x = 372,420.79

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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.