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Finding the Fourth Proportional to 437,959.20, 657,111.60 and 171,674.40

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Solution

The fourth proportional to 437,959.20, 657,111.60 and 171,674.40 is: 257,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,959.20 : 657,111.60 = 171,674.40 : x
  2. Step 2: Convert to fraction form
    437,959.20/657,111.60 = 171,674.40/x
  3. Step 3: Cross multiply
    437,959.20x = 657,111.60 × 171,674.40
  4. Step 4: Simplify right side
    437,959.20x = 112,809,239,663.04
  5. Step 5: Solve for x
    x = 112,809,239,663.04/437,959.20
  6. Step 6: Final answer
    x = 257,579.34

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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.