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Finding the Fourth Proportional to 1,249,691,747.44, 1,724,508,699.42 and 713,738,046.10

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Solution

The fourth proportional to 1,249,691,747.44, 1,724,508,699.42 and 713,738,046.10 is: 984,920,859.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,691,747.44 : 1,724,508,699.42 = 713,738,046.10 : x
  2. Step 2: Convert to fraction form
    1,249,691,747.44/1,724,508,699.42 = 713,738,046.10/x
  3. Step 3: Cross multiply
    1,249,691,747.44x = 1,724,508,699.42 × 713,738,046.10
  4. Step 4: Simplify right side
    1,249,691,747.44x = 1,230,847,469,606,483,200
  5. Step 5: Solve for x
    x = 1,230,847,469,606,483,200/1,249,691,747.44
  6. Step 6: Final answer
    x = 984,920,859.19

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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.