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Finding the Fourth Proportional to 416,978.88, 575,433.70 and 225,995.46

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Solution

The fourth proportional to 416,978.88, 575,433.70 and 225,995.46 is: 311,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,978.88 : 575,433.70 = 225,995.46 : x
  2. Step 2: Convert to fraction form
    416,978.88/575,433.70 = 225,995.46/x
  3. Step 3: Cross multiply
    416,978.88x = 575,433.70 × 225,995.46
  4. Step 4: Simplify right side
    416,978.88x = 130,045,403,731.00
  5. Step 5: Solve for x
    x = 130,045,403,731.00/416,978.88
  6. Step 6: Final answer
    x = 311,875.28

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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.