Home / 18,689,543.40-28,039,563.90-9,105,234.60

Finding the Fourth Proportional to 18,689,543.40, 28,039,563.90 and 9,105,234.60

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Solution

The fourth proportional to 18,689,543.40, 28,039,563.90 and 9,105,234.60 is: 13,660,409.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,543.40 : 28,039,563.90 = 9,105,234.60 : x
  2. Step 2: Convert to fraction form
    18,689,543.40/28,039,563.90 = 9,105,234.60/x
  3. Step 3: Cross multiply
    18,689,543.40x = 28,039,563.90 × 9,105,234.60
  4. Step 4: Simplify right side
    18,689,543.40x = 255,306,807,391,190.91
  5. Step 5: Solve for x
    x = 255,306,807,391,190.91/18,689,543.40
  6. Step 6: Final answer
    x = 13,660,409.03

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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.