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Finding the Fourth Proportional to 373,492.80, 515,420.55 and 203,729.76

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Solution

The fourth proportional to 373,492.80, 515,420.55 and 203,729.76 is: 281,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,492.80 : 515,420.55 = 203,729.76 : x
  2. Step 2: Convert to fraction form
    373,492.80/515,420.55 = 203,729.76/x
  3. Step 3: Cross multiply
    373,492.80x = 515,420.55 × 203,729.76
  4. Step 4: Simplify right side
    373,492.80x = 105,006,504,950.57
  5. Step 5: Solve for x
    x = 105,006,504,950.57/373,492.80
  6. Step 6: Final answer
    x = 281,147.33

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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.