Home / 18,913,999.20-28,370,998.80-13,141,096.80

Finding the Fourth Proportional to 18,913,999.20, 28,370,998.80 and 13,141,096.80

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Solution

The fourth proportional to 18,913,999.20, 28,370,998.80 and 13,141,096.80 is: 19,711,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913,999.20 : 28,370,998.80 = 13,141,096.80 : x
  2. Step 2: Convert to fraction form
    18,913,999.20/28,370,998.80 = 13,141,096.80/x
  3. Step 3: Cross multiply
    18,913,999.20x = 28,370,998.80 × 13,141,096.80
  4. Step 4: Simplify right side
    18,913,999.20x = 372,826,041,543,483.88
  5. Step 5: Solve for x
    x = 372,826,041,543,483.88/18,913,999.20
  6. Step 6: Final answer
    x = 19,711,645.20

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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.