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Finding the Fourth Proportional to 21,300,246.30, 31,950,369.45 and 21,300,246.30

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Solution

The fourth proportional to 21,300,246.30, 31,950,369.45 and 21,300,246.30 is: 31,950,369.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300,246.30 : 31,950,369.45 = 21,300,246.30 : x
  2. Step 2: Convert to fraction form
    21,300,246.30/31,950,369.45 = 21,300,246.30/x
  3. Step 3: Cross multiply
    21,300,246.30x = 31,950,369.45 × 21,300,246.30
  4. Step 4: Simplify right side
    21,300,246.30x = 680,550,738,660,995.50
  5. Step 5: Solve for x
    x = 680,550,738,660,995.50/21,300,246.30
  6. Step 6: Final answer
    x = 31,950,369.45

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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.