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Finding the Fourth Proportional to 121,378,912.20, 182,068,368.30 and 121,378,912.20

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Solution

The fourth proportional to 121,378,912.20, 182,068,368.30 and 121,378,912.20 is: 182,068,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,378,912.20 : 182,068,368.30 = 121,378,912.20 : x
  2. Step 2: Convert to fraction form
    121,378,912.20/182,068,368.30 = 121,378,912.20/x
  3. Step 3: Cross multiply
    121,378,912.20x = 182,068,368.30 × 121,378,912.20
  4. Step 4: Simplify right side
    121,378,912.20x = 22,099,260,490,282,964
  5. Step 5: Solve for x
    x = 22,099,260,490,282,964/121,378,912.20
  6. Step 6: Final answer
    x = 182,068,368.30

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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.