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Finding the Fourth Proportional to 313,809.72, 433,065.90 and 170,579.46

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Solution

The fourth proportional to 313,809.72, 433,065.90 and 170,579.46 is: 235,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,809.72 : 433,065.90 = 170,579.46 : x
  2. Step 2: Convert to fraction form
    313,809.72/433,065.90 = 170,579.46/x
  3. Step 3: Cross multiply
    313,809.72x = 433,065.90 × 170,579.46
  4. Step 4: Simplify right side
    313,809.72x = 73,872,147,366.41
  5. Step 5: Solve for x
    x = 73,872,147,366.41/313,809.72
  6. Step 6: Final answer
    x = 235,404.27

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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.