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Finding the Fourth Proportional to 12,290,578.40, 17,174,923.30 and 12,290,578.40

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Solution

The fourth proportional to 12,290,578.40, 17,174,923.30 and 12,290,578.40 is: 17,174,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,578.40 : 17,174,923.30 = 12,290,578.40 : x
  2. Step 2: Convert to fraction form
    12,290,578.40/17,174,923.30 = 12,290,578.40/x
  3. Step 3: Cross multiply
    12,290,578.40x = 17,174,923.30 × 12,290,578.40
  4. Step 4: Simplify right side
    12,290,578.40x = 211,089,741,332,636.75
  5. Step 5: Solve for x
    x = 211,089,741,332,636.75/12,290,578.40
  6. Step 6: Final answer
    x = 17,174,923.30

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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.