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Finding the Fourth Proportional to 153,940.70, 230,911.05 and 146,723.60

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Solution

The fourth proportional to 153,940.70, 230,911.05 and 146,723.60 is: 220,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,940.70 : 230,911.05 = 146,723.60 : x
  2. Step 2: Convert to fraction form
    153,940.70/230,911.05 = 146,723.60/x
  3. Step 3: Cross multiply
    153,940.70x = 230,911.05 × 146,723.60
  4. Step 4: Simplify right side
    153,940.70x = 33,880,100,535.78
  5. Step 5: Solve for x
    x = 33,880,100,535.78/153,940.70
  6. Step 6: Final answer
    x = 220,085.40

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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.