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Finding the Fourth Proportional to 66,428,982.30, 99,643,473.45 and 66,428,982.30

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Solution

The fourth proportional to 66,428,982.30, 99,643,473.45 and 66,428,982.30 is: 99,643,473.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,982.30 : 99,643,473.45 = 66,428,982.30 : x
  2. Step 2: Convert to fraction form
    66,428,982.30/99,643,473.45 = 66,428,982.30/x
  3. Step 3: Cross multiply
    66,428,982.30x = 99,643,473.45 × 66,428,982.30
  4. Step 4: Simplify right side
    66,428,982.30x = 6,619,214,534,120,570
  5. Step 5: Solve for x
    x = 6,619,214,534,120,570/66,428,982.30
  6. Step 6: Final answer
    x = 99,643,473.45

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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.