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Finding the Fourth Proportional to 18,683,846.10, 28,025,769.15 and 10,074,501.90

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Solution

The fourth proportional to 18,683,846.10, 28,025,769.15 and 10,074,501.90 is: 15,111,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,846.10 : 28,025,769.15 = 10,074,501.90 : x
  2. Step 2: Convert to fraction form
    18,683,846.10/28,025,769.15 = 10,074,501.90/x
  3. Step 3: Cross multiply
    18,683,846.10x = 28,025,769.15 × 10,074,501.90
  4. Step 4: Simplify right side
    18,683,846.10x = 282,345,664,550,636.38
  5. Step 5: Solve for x
    x = 282,345,664,550,636.38/18,683,846.10
  6. Step 6: Final answer
    x = 15,111,752.85

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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.