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Finding the Fourth Proportional to 53,155,469.70, 74,619,211.50 and 53,155,469.70

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Solution

The fourth proportional to 53,155,469.70, 74,619,211.50 and 53,155,469.70 is: 74,619,211.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,155,469.70 : 74,619,211.50 = 53,155,469.70 : x
  2. Step 2: Convert to fraction form
    53,155,469.70/74,619,211.50 = 53,155,469.70/x
  3. Step 3: Cross multiply
    53,155,469.70x = 74,619,211.50 × 53,155,469.70
  4. Step 4: Simplify right side
    53,155,469.70x = 3,966,419,235,926,142
  5. Step 5: Solve for x
    x = 3,966,419,235,926,142/53,155,469.70
  6. Step 6: Final answer
    x = 74,619,211.50

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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.