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Finding the Fourth Proportional to 70,645,408.40, 105,968,112.60 and 70,645,408.40

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Solution

The fourth proportional to 70,645,408.40, 105,968,112.60 and 70,645,408.40 is: 105,968,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,645,408.40 : 105,968,112.60 = 70,645,408.40 : x
  2. Step 2: Convert to fraction form
    70,645,408.40/105,968,112.60 = 70,645,408.40/x
  3. Step 3: Cross multiply
    70,645,408.40x = 105,968,112.60 × 70,645,408.40
  4. Step 4: Simplify right side
    70,645,408.40x = 7,486,160,592,004,186
  5. Step 5: Solve for x
    x = 7,486,160,592,004,186/70,645,408.40
  6. Step 6: Final answer
    x = 105,968,112.60

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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.