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Finding the Fourth Proportional to 317,518.56, 438,243.54 and 190,267.96

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Solution

The fourth proportional to 317,518.56, 438,243.54 and 190,267.96 is: 262,610.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,518.56 : 438,243.54 = 190,267.96 : x
  2. Step 2: Convert to fraction form
    317,518.56/438,243.54 = 190,267.96/x
  3. Step 3: Cross multiply
    317,518.56x = 438,243.54 × 190,267.96
  4. Step 4: Simplify right side
    317,518.56x = 83,383,704,338.98
  5. Step 5: Solve for x
    x = 83,383,704,338.98/317,518.56
  6. Step 6: Final answer
    x = 262,610.49

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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.