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Finding the Fourth Proportional to 868,344,559.70, 1,218,907,246.30 and 868,344,559.70

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Solution

The fourth proportional to 868,344,559.70, 1,218,907,246.30 and 868,344,559.70 is: 1,218,907,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,344,559.70 : 1,218,907,246.30 = 868,344,559.70 : x
  2. Step 2: Convert to fraction form
    868,344,559.70/1,218,907,246.30 = 868,344,559.70/x
  3. Step 3: Cross multiply
    868,344,559.70x = 1,218,907,246.30 × 868,344,559.70
  4. Step 4: Simplify right side
    868,344,559.70x = 1,058,431,476,103,512,960
  5. Step 5: Solve for x
    x = 1,058,431,476,103,512,960/868,344,559.70
  6. Step 6: Final answer
    x = 1,218,907,246.30

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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.