Home / 28,990,127.20-43,485,190.80-19,434,978.40

Finding the Fourth Proportional to 28,990,127.20, 43,485,190.80 and 19,434,978.40

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Solution

The fourth proportional to 28,990,127.20, 43,485,190.80 and 19,434,978.40 is: 29,152,467.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990,127.20 : 43,485,190.80 = 19,434,978.40 : x
  2. Step 2: Convert to fraction form
    28,990,127.20/43,485,190.80 = 19,434,978.40/x
  3. Step 3: Cross multiply
    28,990,127.20x = 43,485,190.80 × 19,434,978.40
  4. Step 4: Simplify right side
    28,990,127.20x = 845,133,743,917,878.62
  5. Step 5: Solve for x
    x = 845,133,743,917,878.62/28,990,127.20
  6. Step 6: Final answer
    x = 29,152,467.60

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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.