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Finding the Fourth Proportional to 18,562,899.30, 27,886,339.35 and 12,894,195.30

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Solution

The fourth proportional to 18,562,899.30, 27,886,339.35 and 12,894,195.30 is: 19,370,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562,899.30 : 27,886,339.35 = 12,894,195.30 : x
  2. Step 2: Convert to fraction form
    18,562,899.30/27,886,339.35 = 12,894,195.30/x
  3. Step 3: Cross multiply
    18,562,899.30x = 27,886,339.35 × 12,894,195.30
  4. Step 4: Simplify right side
    18,562,899.30x = 359,571,905,780,975.12
  5. Step 5: Solve for x
    x = 359,571,905,780,975.12/18,562,899.30
  6. Step 6: Final answer
    x = 19,370,460.40

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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.