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Finding the Fourth Proportional to 18,842,647.60, 28,263,971.40 and 18,045,486.10

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Solution

The fourth proportional to 18,842,647.60, 28,263,971.40 and 18,045,486.10 is: 27,068,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842,647.60 : 28,263,971.40 = 18,045,486.10 : x
  2. Step 2: Convert to fraction form
    18,842,647.60/28,263,971.40 = 18,045,486.10/x
  3. Step 3: Cross multiply
    18,842,647.60x = 28,263,971.40 × 18,045,486.10
  4. Step 4: Simplify right side
    18,842,647.60x = 510,037,103,029,497.56
  5. Step 5: Solve for x
    x = 510,037,103,029,497.56/18,842,647.60
  6. Step 6: Final answer
    x = 27,068,229.15

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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.