Home / 18,806,385.40-28,218,909.30-7,447,204.60

Finding the Fourth Proportional to 18,806,385.40, 28,218,909.30 and 7,447,204.60

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Solution

The fourth proportional to 18,806,385.40, 28,218,909.30 and 7,447,204.60 is: 11,174,501.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806,385.40 : 28,218,909.30 = 7,447,204.60 : x
  2. Step 2: Convert to fraction form
    18,806,385.40/28,218,909.30 = 7,447,204.60/x
  3. Step 3: Cross multiply
    18,806,385.40x = 28,218,909.30 × 7,447,204.60
  4. Step 4: Simplify right side
    18,806,385.40x = 210,151,991,145,942.78
  5. Step 5: Solve for x
    x = 210,151,991,145,942.78/18,806,385.40
  6. Step 6: Final answer
    x = 11,174,501.99

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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.