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Finding the Fourth Proportional to 157,999.20, 236,912.40 and 64,399.20

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Solution

The fourth proportional to 157,999.20, 236,912.40 and 64,399.20 is: 96,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,999.20 : 236,912.40 = 64,399.20 : x
  2. Step 2: Convert to fraction form
    157,999.20/236,912.40 = 64,399.20/x
  3. Step 3: Cross multiply
    157,999.20x = 236,912.40 × 64,399.20
  4. Step 4: Simplify right side
    157,999.20x = 15,256,969,030.08
  5. Step 5: Solve for x
    x = 15,256,969,030.08/157,999.20
  6. Step 6: Final answer
    x = 96,563.58

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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.