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Finding the Fourth Proportional to 18,831,728.10, 28,247,592.15 and 14,580,200.10

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Solution

The fourth proportional to 18,831,728.10, 28,247,592.15 and 14,580,200.10 is: 21,870,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,831,728.10 : 28,247,592.15 = 14,580,200.10 : x
  2. Step 2: Convert to fraction form
    18,831,728.10/28,247,592.15 = 14,580,200.10/x
  3. Step 3: Cross multiply
    18,831,728.10x = 28,247,592.15 × 14,580,200.10
  4. Step 4: Simplify right side
    18,831,728.10x = 411,855,545,890,189.19
  5. Step 5: Solve for x
    x = 411,855,545,890,189.19/18,831,728.10
  6. Step 6: Final answer
    x = 21,870,300.15

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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.