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Finding the Fourth Proportional to 18,320,400.80, 25,614,968.80 and 18,320,400.80

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Solution

The fourth proportional to 18,320,400.80, 25,614,968.80 and 18,320,400.80 is: 25,614,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320,400.80 : 25,614,968.80 = 18,320,400.80 : x
  2. Step 2: Convert to fraction form
    18,320,400.80/25,614,968.80 = 18,320,400.80/x
  3. Step 3: Cross multiply
    18,320,400.80x = 25,614,968.80 × 18,320,400.80
  4. Step 4: Simplify right side
    18,320,400.80x = 469,276,494,895,495.06
  5. Step 5: Solve for x
    x = 469,276,494,895,495.06/18,320,400.80
  6. Step 6: Final answer
    x = 25,614,968.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.