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Finding the Fourth Proportional to 171,999.20, 257,998.80 and 153,628.40

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Solution

The fourth proportional to 171,999.20, 257,998.80 and 153,628.40 is: 230,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,999.20 : 257,998.80 = 153,628.40 : x
  2. Step 2: Convert to fraction form
    171,999.20/257,998.80 = 153,628.40/x
  3. Step 3: Cross multiply
    171,999.20x = 257,998.80 × 153,628.40
  4. Step 4: Simplify right side
    171,999.20x = 39,635,942,845.92
  5. Step 5: Solve for x
    x = 39,635,942,845.92/171,999.20
  6. Step 6: Final answer
    x = 230,442.60

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1.5x scale

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.