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Finding the Fourth Proportional to 12,769,228.20, 19,153,842.30 and 12,769,228.20

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Solution

The fourth proportional to 12,769,228.20, 19,153,842.30 and 12,769,228.20 is: 19,153,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769,228.20 : 19,153,842.30 = 12,769,228.20 : x
  2. Step 2: Convert to fraction form
    12,769,228.20/19,153,842.30 = 12,769,228.20/x
  3. Step 3: Cross multiply
    12,769,228.20x = 19,153,842.30 × 12,769,228.20
  4. Step 4: Simplify right side
    12,769,228.20x = 244,579,783,235,512.84
  5. Step 5: Solve for x
    x = 244,579,783,235,512.84/12,769,228.20
  6. Step 6: Final answer
    x = 19,153,842.30

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Double scale
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1.5x scale

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.