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Finding the Fourth Proportional to 14,689,815.90, 20,586,999.90 and 14,689,815.90

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Solution

The fourth proportional to 14,689,815.90, 20,586,999.90 and 14,689,815.90 is: 20,586,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689,815.90 : 20,586,999.90 = 14,689,815.90 : x
  2. Step 2: Convert to fraction form
    14,689,815.90/20,586,999.90 = 14,689,815.90/x
  3. Step 3: Cross multiply
    14,689,815.90x = 20,586,999.90 × 14,689,815.90
  4. Step 4: Simplify right side
    14,689,815.90x = 302,419,238,464,318.38
  5. Step 5: Solve for x
    x = 302,419,238,464,318.38/14,689,815.90
  6. Step 6: Final answer
    x = 20,586,999.90

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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.