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Finding the Fourth Proportional to 193,893.51, 290,683.40 and 87,199.34

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Solution

The fourth proportional to 193,893.51, 290,683.40 and 87,199.34 is: 130,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,893.51 : 290,683.40 = 87,199.34 : x
  2. Step 2: Convert to fraction form
    193,893.51/290,683.40 = 87,199.34/x
  3. Step 3: Cross multiply
    193,893.51x = 290,683.40 × 87,199.34
  4. Step 4: Simplify right side
    193,893.51x = 25,347,398,739.54
  5. Step 5: Solve for x
    x = 25,347,398,739.54/193,893.51
  6. Step 6: Final answer
    x = 130,728.45

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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.