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Finding the Fourth Proportional to 91,961,819,685.20, 137,942,729,527.80 and 91,961,819,685.20

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Solution

The fourth proportional to 91,961,819,685.20, 137,942,729,527.80 and 91,961,819,685.20 is: 137,942,729,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,961,819,685.20 : 137,942,729,527.80 = 91,961,819,685.20 : x
  2. Step 2: Convert to fraction form
    91,961,819,685.20/137,942,729,527.80 = 91,961,819,685.20/x
  3. Step 3: Cross multiply
    91,961,819,685.20x = 137,942,729,527.80 × 91,961,819,685.20
  4. Step 4: Simplify right side
    91,961,819,685.20x = 12,685,464,419,719,855,472,640
  5. Step 5: Solve for x
    x = 12,685,464,419,719,855,472,640/91,961,819,685.20
  6. Step 6: Final answer
    x = 137,942,729,527.80

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.