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Finding the Fourth Proportional to 66,439,745.60, 99,659,618.40 and 66,439,745.60

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Solution

The fourth proportional to 66,439,745.60, 99,659,618.40 and 66,439,745.60 is: 99,659,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,439,745.60 : 99,659,618.40 = 66,439,745.60 : x
  2. Step 2: Convert to fraction form
    66,439,745.60/99,659,618.40 = 66,439,745.60/x
  3. Step 3: Cross multiply
    66,439,745.60x = 99,659,618.40 × 66,439,745.60
  4. Step 4: Simplify right side
    66,439,745.60x = 6,621,359,693,089,080
  5. Step 5: Solve for x
    x = 6,621,359,693,089,080/66,439,745.60
  6. Step 6: Final answer
    x = 99,659,618.40

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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.