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Finding the Fourth Proportional to 605,128.80, 907,693.20 and 161,896.80

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Solution

The fourth proportional to 605,128.80, 907,693.20 and 161,896.80 is: 242,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,128.80 : 907,693.20 = 161,896.80 : x
  2. Step 2: Convert to fraction form
    605,128.80/907,693.20 = 161,896.80/x
  3. Step 3: Cross multiply
    605,128.80x = 907,693.20 × 161,896.80
  4. Step 4: Simplify right side
    605,128.80x = 146,952,624,461.76
  5. Step 5: Solve for x
    x = 146,952,624,461.76/605,128.80
  6. Step 6: Final answer
    x = 242,845.20

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Similar ratio
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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.