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Finding the Fourth Proportional to 18,907,219.40, 28,360,829.10 and 18,907,219.40

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Solution

The fourth proportional to 18,907,219.40, 28,360,829.10 and 18,907,219.40 is: 28,360,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907,219.40 : 28,360,829.10 = 18,907,219.40 : x
  2. Step 2: Convert to fraction form
    18,907,219.40/28,360,829.10 = 18,907,219.40/x
  3. Step 3: Cross multiply
    18,907,219.40x = 28,360,829.10 × 18,907,219.40
  4. Step 4: Simplify right side
    18,907,219.40x = 536,224,418,159,604.50
  5. Step 5: Solve for x
    x = 536,224,418,159,604.50/18,907,219.40
  6. Step 6: Final answer
    x = 28,360,829.10

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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.