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Finding the Fourth Proportional to 14,093,940.80, 21,140,911.20 and 11,904,219.20

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Solution

The fourth proportional to 14,093,940.80, 21,140,911.20 and 11,904,219.20 is: 17,856,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,093,940.80 : 21,140,911.20 = 11,904,219.20 : x
  2. Step 2: Convert to fraction form
    14,093,940.80/21,140,911.20 = 11,904,219.20/x
  3. Step 3: Cross multiply
    14,093,940.80x = 21,140,911.20 × 11,904,219.20
  4. Step 4: Simplify right side
    14,093,940.80x = 251,666,041,012,535
  5. Step 5: Solve for x
    x = 251,666,041,012,535/14,093,940.80
  6. Step 6: Final answer
    x = 17,856,328.80

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1.5x scale

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.