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Finding the Fourth Proportional to 189,453.65, 261,452.37 and 103,417.73

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Solution

The fourth proportional to 189,453.65, 261,452.37 and 103,417.73 is: 142,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,453.65 : 261,452.37 = 103,417.73 : x
  2. Step 2: Convert to fraction form
    189,453.65/261,452.37 = 103,417.73/x
  3. Step 3: Cross multiply
    189,453.65x = 261,452.37 × 103,417.73
  4. Step 4: Simplify right side
    189,453.65x = 27,038,811,262.15
  5. Step 5: Solve for x
    x = 27,038,811,262.15/189,453.65
  6. Step 6: Final answer
    x = 142,719.93

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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.