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Finding the Fourth Proportional to 313,255.70, 432,293.28 and 170,015.74

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Solution

The fourth proportional to 313,255.70, 432,293.28 and 170,015.74 is: 234,621.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,255.70 : 432,293.28 = 170,015.74 : x
  2. Step 2: Convert to fraction form
    313,255.70/432,293.28 = 170,015.74/x
  3. Step 3: Cross multiply
    313,255.70x = 432,293.28 × 170,015.74
  4. Step 4: Simplify right side
    313,255.70x = 73,496,660,815.49
  5. Step 5: Solve for x
    x = 73,496,660,815.49/313,255.70
  6. Step 6: Final answer
    x = 234,621.95

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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.