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Finding the Fourth Proportional to 318,158.28, 439,047.14 and 174,917.21

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Solution

The fourth proportional to 318,158.28, 439,047.14 and 174,917.21 is: 241,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,158.28 : 439,047.14 = 174,917.21 : x
  2. Step 2: Convert to fraction form
    318,158.28/439,047.14 = 174,917.21/x
  3. Step 3: Cross multiply
    318,158.28x = 439,047.14 × 174,917.21
  4. Step 4: Simplify right side
    318,158.28x = 76,796,897,717.46
  5. Step 5: Solve for x
    x = 76,796,897,717.46/318,158.28
  6. Step 6: Final answer
    x = 241,379.54

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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.