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Finding the Fourth Proportional to 18,953,446.55, 28,433,713.06 and 7,594,780.91

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Solution

The fourth proportional to 18,953,446.55, 28,433,713.06 and 7,594,780.91 is: 11,393,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953,446.55 : 28,433,713.06 = 7,594,780.91 : x
  2. Step 2: Convert to fraction form
    18,953,446.55/28,433,713.06 = 7,594,780.91/x
  3. Step 3: Cross multiply
    18,953,446.55x = 28,433,713.06 × 7,594,780.91
  4. Step 4: Simplify right side
    18,953,446.55x = 215,947,821,015,830.62
  5. Step 5: Solve for x
    x = 215,947,821,015,830.62/18,953,446.55
  6. Step 6: Final answer
    x = 11,393,591.16

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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.