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Finding the Fourth Proportional to 18,798,744.80, 28,198,117.20 and 6,019,666.40

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Solution

The fourth proportional to 18,798,744.80, 28,198,117.20 and 6,019,666.40 is: 9,029,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798,744.80 : 28,198,117.20 = 6,019,666.40 : x
  2. Step 2: Convert to fraction form
    18,798,744.80/28,198,117.20 = 6,019,666.40/x
  3. Step 3: Cross multiply
    18,798,744.80x = 28,198,117.20 × 6,019,666.40
  4. Step 4: Simplify right side
    18,798,744.80x = 169,743,258,652,102.09
  5. Step 5: Solve for x
    x = 169,743,258,652,102.09/18,798,744.80
  6. Step 6: Final answer
    x = 9,029,499.60

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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.