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Finding the Fourth Proportional to 719,299,945.20, 1,008,040,290 and 719,299,945.20

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Solution

The fourth proportional to 719,299,945.20, 1,008,040,290 and 719,299,945.20 is: 1,008,040,290

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,299,945.20 : 1,008,040,290 = 719,299,945.20 : x
  2. Step 2: Convert to fraction form
    719,299,945.20/1,008,040,290 = 719,299,945.20/x
  3. Step 3: Cross multiply
    719,299,945.20x = 1,008,040,290 × 719,299,945.20
  4. Step 4: Simplify right side
    719,299,945.20x = 725,083,325,356,392,192
  5. Step 5: Solve for x
    x = 725,083,325,356,392,192/719,299,945.20
  6. Step 6: Final answer
    x = 1,008,040,290

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.