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Finding the Fourth Proportional to 13,831,346.70, 19,392,228.90 and 13,831,346.70

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Solution

The fourth proportional to 13,831,346.70, 19,392,228.90 and 13,831,346.70 is: 19,392,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831,346.70 : 19,392,228.90 = 13,831,346.70 : x
  2. Step 2: Convert to fraction form
    13,831,346.70/19,392,228.90 = 13,831,346.70/x
  3. Step 3: Cross multiply
    13,831,346.70x = 19,392,228.90 × 13,831,346.70
  4. Step 4: Simplify right side
    13,831,346.70x = 268,220,641,201,659.59
  5. Step 5: Solve for x
    x = 268,220,641,201,659.59/13,831,346.70
  6. Step 6: Final answer
    x = 19,392,228.90

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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.