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Finding the Fourth Proportional to 71,072,489.60, 99,728,233.60 and 71,072,489.60

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Solution

The fourth proportional to 71,072,489.60, 99,728,233.60 and 71,072,489.60 is: 99,728,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072,489.60 : 99,728,233.60 = 71,072,489.60 : x
  2. Step 2: Convert to fraction form
    71,072,489.60/99,728,233.60 = 71,072,489.60/x
  3. Step 3: Cross multiply
    71,072,489.60x = 99,728,233.60 × 71,072,489.60
  4. Step 4: Simplify right side
    71,072,489.60x = 7,087,933,845,362,370
  5. Step 5: Solve for x
    x = 7,087,933,845,362,370/71,072,489.60
  6. Step 6: Final answer
    x = 99,728,233.60

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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.