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Finding the Fourth Proportional to 326,999.96, 451,261.50 and 191,041.64

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Solution

The fourth proportional to 326,999.96, 451,261.50 and 191,041.64 is: 263,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,999.96 : 451,261.50 = 191,041.64 : x
  2. Step 2: Convert to fraction form
    326,999.96/451,261.50 = 191,041.64/x
  3. Step 3: Cross multiply
    326,999.96x = 451,261.50 × 191,041.64
  4. Step 4: Simplify right side
    326,999.96x = 86,209,737,028.86
  5. Step 5: Solve for x
    x = 86,209,737,028.86/326,999.96
  6. Step 6: Final answer
    x = 263,638.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.