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Finding the Fourth Proportional to 3,485,259,847.40, 4,891,608,187 and 3,485,259,847.40

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Solution

The fourth proportional to 3,485,259,847.40, 4,891,608,187 and 3,485,259,847.40 is: 4,891,608,187

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485,259,847.40 : 4,891,608,187 = 3,485,259,847.40 : x
  2. Step 2: Convert to fraction form
    3,485,259,847.40/4,891,608,187 = 3,485,259,847.40/x
  3. Step 3: Cross multiply
    3,485,259,847.40x = 4,891,608,187 × 3,485,259,847.40
  4. Step 4: Simplify right side
    3,485,259,847.40x = 17,048,525,603,364,210,688
  5. Step 5: Solve for x
    x = 17,048,525,603,364,210,688/3,485,259,847.40
  6. Step 6: Final answer
    x = 4,891,608,187

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Double scale
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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.