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Finding the Fourth Proportional to 14,831,996.80, 20,824,515.20 and 14,831,996.80

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Solution

The fourth proportional to 14,831,996.80, 20,824,515.20 and 14,831,996.80 is: 20,824,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,831,996.80 : 20,824,515.20 = 14,831,996.80 : x
  2. Step 2: Convert to fraction form
    14,831,996.80/20,824,515.20 = 14,831,996.80/x
  3. Step 3: Cross multiply
    14,831,996.80x = 20,824,515.20 × 14,831,996.80
  4. Step 4: Simplify right side
    14,831,996.80x = 308,869,142,807,951.38
  5. Step 5: Solve for x
    x = 308,869,142,807,951.38/14,831,996.80
  6. Step 6: Final answer
    x = 20,824,515.20

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Double scale
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1.5x scale

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.