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Finding the Fourth Proportional to 13,776,259.20, 20,664,388.80 and 12,096,643.20

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Solution

The fourth proportional to 13,776,259.20, 20,664,388.80 and 12,096,643.20 is: 18,144,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776,259.20 : 20,664,388.80 = 12,096,643.20 : x
  2. Step 2: Convert to fraction form
    13,776,259.20/20,664,388.80 = 12,096,643.20/x
  3. Step 3: Cross multiply
    13,776,259.20x = 20,664,388.80 × 12,096,643.20
  4. Step 4: Simplify right side
    13,776,259.20x = 249,969,738,259,676.16
  5. Step 5: Solve for x
    x = 249,969,738,259,676.16/13,776,259.20
  6. Step 6: Final answer
    x = 18,144,964.80

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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.