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Finding the Fourth Proportional to 169,864.80, 254,991.60 and 99,783.60

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Solution

The fourth proportional to 169,864.80, 254,991.60 and 99,783.60 is: 149,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,864.80 : 254,991.60 = 99,783.60 : x
  2. Step 2: Convert to fraction form
    169,864.80/254,991.60 = 99,783.60/x
  3. Step 3: Cross multiply
    169,864.80x = 254,991.60 × 99,783.60
  4. Step 4: Simplify right side
    169,864.80x = 25,443,979,817.76
  5. Step 5: Solve for x
    x = 25,443,979,817.76/169,864.80
  6. Step 6: Final answer
    x = 149,789.60

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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.