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Finding the Fourth Proportional to 330,912.48, 456,663.78 and 180,009.48

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Solution

The fourth proportional to 330,912.48, 456,663.78 and 180,009.48 is: 248,415.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,912.48 : 456,663.78 = 180,009.48 : x
  2. Step 2: Convert to fraction form
    330,912.48/456,663.78 = 180,009.48/x
  3. Step 3: Cross multiply
    330,912.48x = 456,663.78 × 180,009.48
  4. Step 4: Simplify right side
    330,912.48x = 82,203,809,572.63
  5. Step 5: Solve for x
    x = 82,203,809,572.63/330,912.48
  6. Step 6: Final answer
    x = 248,415.56

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1.5x scale

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.