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Finding the Fourth Proportional to 357,689.12, 493,610.85 and 196,554.56

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Solution

The fourth proportional to 357,689.12, 493,610.85 and 196,554.56 is: 271,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,689.12 : 493,610.85 = 196,554.56 : x
  2. Step 2: Convert to fraction form
    357,689.12/493,610.85 = 196,554.56/x
  3. Step 3: Cross multiply
    357,689.12x = 493,610.85 × 196,554.56
  4. Step 4: Simplify right side
    357,689.12x = 97,021,464,667.00
  5. Step 5: Solve for x
    x = 97,021,464,667.00/357,689.12
  6. Step 6: Final answer
    x = 271,245.22

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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.