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Finding the Fourth Proportional to 6,868,393.55, 9,478,649.66 and 3,771,047.46

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Solution

The fourth proportional to 6,868,393.55, 9,478,649.66 and 3,771,047.46 is: 5,204,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,868,393.55 : 9,478,649.66 = 3,771,047.46 : x
  2. Step 2: Convert to fraction form
    6,868,393.55/9,478,649.66 = 3,771,047.46/x
  3. Step 3: Cross multiply
    6,868,393.55x = 9,478,649.66 × 3,771,047.46
  4. Step 4: Simplify right side
    6,868,393.55x = 35,744,437,705,717.62
  5. Step 5: Solve for x
    x = 35,744,437,705,717.62/6,868,393.55
  6. Step 6: Final answer
    x = 5,204,191.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.