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Finding the Fourth Proportional to 127,324,973.20, 190,987,459.80 and 127,324,973.20

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Solution

The fourth proportional to 127,324,973.20, 190,987,459.80 and 127,324,973.20 is: 190,987,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,324,973.20 : 190,987,459.80 = 127,324,973.20 : x
  2. Step 2: Convert to fraction form
    127,324,973.20/190,987,459.80 = 127,324,973.20/x
  3. Step 3: Cross multiply
    127,324,973.20x = 190,987,459.80 × 127,324,973.20
  4. Step 4: Simplify right side
    127,324,973.20x = 24,317,473,200,571,080
  5. Step 5: Solve for x
    x = 24,317,473,200,571,080/127,324,973.20
  6. Step 6: Final answer
    x = 190,987,459.80

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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.