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Finding the Fourth Proportional to 7,658,913.10, 11,476,559.85 and 6,643,270.30

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Solution

The fourth proportional to 7,658,913.10, 11,476,559.85 and 6,643,270.30 is: 9,954,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,658,913.10 : 11,476,559.85 = 6,643,270.30 : x
  2. Step 2: Convert to fraction form
    7,658,913.10/11,476,559.85 = 6,643,270.30/x
  3. Step 3: Cross multiply
    7,658,913.10x = 11,476,559.85 × 6,643,270.30
  4. Step 4: Simplify right side
    7,658,913.10x = 76,241,889,197,677.45
  5. Step 5: Solve for x
    x = 76,241,889,197,677.45/7,658,913.10
  6. Step 6: Final answer
    x = 9,954,661.74

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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.