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Finding the Fourth Proportional to 291,509.44, 402,383.70 and 170,689.57

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Solution

The fourth proportional to 291,509.44, 402,383.70 and 170,689.57 is: 235,610.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,509.44 : 402,383.70 = 170,689.57 : x
  2. Step 2: Convert to fraction form
    291,509.44/402,383.70 = 170,689.57/x
  3. Step 3: Cross multiply
    291,509.44x = 402,383.70 × 170,689.57
  4. Step 4: Simplify right side
    291,509.44x = 68,682,699,722.05
  5. Step 5: Solve for x
    x = 68,682,699,722.05/291,509.44
  6. Step 6: Final answer
    x = 235,610.55

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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.