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Finding the Fourth Proportional to 9,978,995.86, 14,966,205.74 and 2,791,037.64

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Solution

The fourth proportional to 9,978,995.86, 14,966,205.74 and 2,791,037.64 is: 4,185,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978,995.86 : 14,966,205.74 = 2,791,037.64 : x
  2. Step 2: Convert to fraction form
    9,978,995.86/14,966,205.74 = 2,791,037.64/x
  3. Step 3: Cross multiply
    9,978,995.86x = 14,966,205.74 × 2,791,037.64
  4. Step 4: Simplify right side
    9,978,995.86x = 41,771,243,548,324.05
  5. Step 5: Solve for x
    x = 41,771,243,548,324.05/9,978,995.86
  6. Step 6: Final answer
    x = 4,185,916.51

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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.