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Finding the Fourth Proportional to 6,603,425.40, 9,905,138.10 and 6,603,425.40

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Solution

The fourth proportional to 6,603,425.40, 9,905,138.10 and 6,603,425.40 is: 9,905,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603,425.40 : 9,905,138.10 = 6,603,425.40 : x
  2. Step 2: Convert to fraction form
    6,603,425.40/9,905,138.10 = 6,603,425.40/x
  3. Step 3: Cross multiply
    6,603,425.40x = 9,905,138.10 × 6,603,425.40
  4. Step 4: Simplify right side
    6,603,425.40x = 65,407,840,520,047.74
  5. Step 5: Solve for x
    x = 65,407,840,520,047.74/6,603,425.40
  6. Step 6: Final answer
    x = 9,905,138.10

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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.