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Finding the Fourth Proportional to 13,429,780.40, 20,101,805.40 and 10,595,428.40

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Solution

The fourth proportional to 13,429,780.40, 20,101,805.40 and 10,595,428.40 is: 15,859,324.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429,780.40 : 20,101,805.40 = 10,595,428.40 : x
  2. Step 2: Convert to fraction form
    13,429,780.40/20,101,805.40 = 10,595,428.40/x
  3. Step 3: Cross multiply
    13,429,780.40x = 20,101,805.40 × 10,595,428.40
  4. Step 4: Simplify right side
    13,429,780.40x = 212,987,239,826,433.34
  5. Step 5: Solve for x
    x = 212,987,239,826,433.34/13,429,780.40
  6. Step 6: Final answer
    x = 15,859,324.09

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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.