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Finding the Fourth Proportional to 18,696,851.10, 28,045,276.65 and 8,619,155.10

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Solution

The fourth proportional to 18,696,851.10, 28,045,276.65 and 8,619,155.10 is: 12,928,732.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696,851.10 : 28,045,276.65 = 8,619,155.10 : x
  2. Step 2: Convert to fraction form
    18,696,851.10/28,045,276.65 = 8,619,155.10/x
  3. Step 3: Cross multiply
    18,696,851.10x = 28,045,276.65 × 8,619,155.10
  4. Step 4: Simplify right side
    18,696,851.10x = 241,726,589,268,758.41
  5. Step 5: Solve for x
    x = 241,726,589,268,758.41/18,696,851.10
  6. Step 6: Final answer
    x = 12,928,732.65

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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.