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Finding the Fourth Proportional to 19,295,863.93, 28,905,955.93 and 11,191,813.93

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Solution

The fourth proportional to 19,295,863.93, 28,905,955.93 and 11,191,813.93 is: 16,765,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,295,863.93 : 28,905,955.93 = 11,191,813.93 : x
  2. Step 2: Convert to fraction form
    19,295,863.93/28,905,955.93 = 11,191,813.93/x
  3. Step 3: Cross multiply
    19,295,863.93x = 28,905,955.93 × 11,191,813.93
  4. Step 4: Simplify right side
    19,295,863.93x = 323,510,080,237,340.06
  5. Step 5: Solve for x
    x = 323,510,080,237,340.06/19,295,863.93
  6. Step 6: Final answer
    x = 16,765,773.30

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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.