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Finding the Fourth Proportional to 19,961,622.40, 29,886,446.40 and 19,401,750.40

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Solution

The fourth proportional to 19,961,622.40, 29,886,446.40 and 19,401,750.40 is: 29,048,208.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961,622.40 : 29,886,446.40 = 19,401,750.40 : x
  2. Step 2: Convert to fraction form
    19,961,622.40/29,886,446.40 = 19,401,750.40/x
  3. Step 3: Cross multiply
    19,961,622.40x = 29,886,446.40 × 19,401,750.40
  4. Step 4: Simplify right side
    19,961,622.40x = 579,849,373,395,778.50
  5. Step 5: Solve for x
    x = 579,849,373,395,778.50/19,961,622.40
  6. Step 6: Final answer
    x = 29,048,208.70

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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.