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Finding the Fourth Proportional to 18,151,509.30, 25,431,008.70 and 18,151,509.30

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Solution

The fourth proportional to 18,151,509.30, 25,431,008.70 and 18,151,509.30 is: 25,431,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,151,509.30 : 25,431,008.70 = 18,151,509.30 : x
  2. Step 2: Convert to fraction form
    18,151,509.30/25,431,008.70 = 18,151,509.30/x
  3. Step 3: Cross multiply
    18,151,509.30x = 25,431,008.70 × 18,151,509.30
  4. Step 4: Simplify right side
    18,151,509.30x = 461,611,190,926,430.94
  5. Step 5: Solve for x
    x = 461,611,190,926,430.94/18,151,509.30
  6. Step 6: Final answer
    x = 25,431,008.70

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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.