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Finding the Fourth Proportional to 18,151,519.80, 25,431,023.40 and 18,151,519.80

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Solution

The fourth proportional to 18,151,519.80, 25,431,023.40 and 18,151,519.80 is: 25,431,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151,519.80 : 25,431,023.40 = 18,151,519.80 : x
  2. Step 2: Convert to fraction form
    18,151,519.80/25,431,023.40 = 18,151,519.80/x
  3. Step 3: Cross multiply
    18,151,519.80x = 25,431,023.40 × 18,151,519.80
  4. Step 4: Simplify right side
    18,151,519.80x = 461,611,724,779,363.31
  5. Step 5: Solve for x
    x = 461,611,724,779,363.31/18,151,519.80
  6. Step 6: Final answer
    x = 25,431,023.40

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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.