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Finding the Fourth Proportional to 363,965,124, 545,947,686 and 121,628,028

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Solution

The fourth proportional to 363,965,124, 545,947,686 and 121,628,028 is: 182,442,042

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,965,124 : 545,947,686 = 121,628,028 : x
  2. Step 2: Convert to fraction form
    363,965,124/545,947,686 = 121,628,028/x
  3. Step 3: Cross multiply
    363,965,124x = 545,947,686 × 121,628,028
  4. Step 4: Simplify right side
    363,965,124x = 66,402,540,439,343,208
  5. Step 5: Solve for x
    x = 66,402,540,439,343,208/363,965,124
  6. Step 6: Final answer
    x = 182,442,042

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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.