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Finding the Fourth Proportional to 19,152,081.90, 28,728,122.85 and 19,152,081.90

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Solution

The fourth proportional to 19,152,081.90, 28,728,122.85 and 19,152,081.90 is: 28,728,122.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,081.90 : 28,728,122.85 = 19,152,081.90 : x
  2. Step 2: Convert to fraction form
    19,152,081.90/28,728,122.85 = 19,152,081.90/x
  3. Step 3: Cross multiply
    19,152,081.90x = 28,728,122.85 × 19,152,081.90
  4. Step 4: Simplify right side
    19,152,081.90x = 550,203,361,656,461.38
  5. Step 5: Solve for x
    x = 550,203,361,656,461.38/19,152,081.90
  6. Step 6: Final answer
    x = 28,728,122.85

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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.