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Finding the Fourth Proportional to 13,830,086.87, 20,745,130.30 and 13,830,086.87

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Solution

The fourth proportional to 13,830,086.87, 20,745,130.30 and 13,830,086.87 is: 20,745,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830,086.87 : 20,745,130.30 = 13,830,086.87 : x
  2. Step 2: Convert to fraction form
    13,830,086.87/20,745,130.30 = 13,830,086.87/x
  3. Step 3: Cross multiply
    13,830,086.87x = 20,745,130.30 × 13,830,086.87
  4. Step 4: Simplify right side
    13,830,086.87x = 286,906,954,195,756.81
  5. Step 5: Solve for x
    x = 286,906,954,195,756.81/13,830,086.87
  6. Step 6: Final answer
    x = 20,745,130.30

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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.