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Finding the Fourth Proportional to 50,375,428.80, 70,659,969.60 and 50,375,428.80

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Solution

The fourth proportional to 50,375,428.80, 70,659,969.60 and 50,375,428.80 is: 70,659,969.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,375,428.80 : 70,659,969.60 = 50,375,428.80 : x
  2. Step 2: Convert to fraction form
    50,375,428.80/70,659,969.60 = 50,375,428.80/x
  3. Step 3: Cross multiply
    50,375,428.80x = 70,659,969.60 × 50,375,428.80
  4. Step 4: Simplify right side
    50,375,428.80x = 3,559,526,267,594,964
  5. Step 5: Solve for x
    x = 3,559,526,267,594,964/50,375,428.80
  6. Step 6: Final answer
    x = 70,659,969.60

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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.