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Finding the Fourth Proportional to 919,993.74, 1,269,605.70 and 512,100.06

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Solution

The fourth proportional to 919,993.74, 1,269,605.70 and 512,100.06 is: 706,706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,993.74 : 1,269,605.70 = 512,100.06 : x
  2. Step 2: Convert to fraction form
    919,993.74/1,269,605.70 = 512,100.06/x
  3. Step 3: Cross multiply
    919,993.74x = 1,269,605.70 × 512,100.06
  4. Step 4: Simplify right side
    919,993.74x = 650,165,155,146.34
  5. Step 5: Solve for x
    x = 650,165,155,146.34/919,993.74
  6. Step 6: Final answer
    x = 706,706.06

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Double scale
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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.