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Finding the Fourth Proportional to 70,435,446.80, 98,408,071.60 and 70,435,446.80

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Solution

The fourth proportional to 70,435,446.80, 98,408,071.60 and 70,435,446.80 is: 98,408,071.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,435,446.80 : 98,408,071.60 = 70,435,446.80 : x
  2. Step 2: Convert to fraction form
    70,435,446.80/98,408,071.60 = 70,435,446.80/x
  3. Step 3: Cross multiply
    70,435,446.80x = 98,408,071.60 × 70,435,446.80
  4. Step 4: Simplify right side
    70,435,446.80x = 6,931,416,491,872,390
  5. Step 5: Solve for x
    x = 6,931,416,491,872,390/70,435,446.80
  6. Step 6: Final answer
    x = 98,408,071.60

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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.