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Finding the Fourth Proportional to 255,905.70, 383,858.55 and 113,750.70

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Solution

The fourth proportional to 255,905.70, 383,858.55 and 113,750.70 is: 170,626.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,905.70 : 383,858.55 = 113,750.70 : x
  2. Step 2: Convert to fraction form
    255,905.70/383,858.55 = 113,750.70/x
  3. Step 3: Cross multiply
    255,905.70x = 383,858.55 × 113,750.70
  4. Step 4: Simplify right side
    255,905.70x = 43,664,178,763.49
  5. Step 5: Solve for x
    x = 43,664,178,763.49/255,905.70
  6. Step 6: Final answer
    x = 170,626.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.