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Finding the Fourth Proportional to 6,772,947.79, 9,346,674.26 and 3,872,399.39

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Solution

The fourth proportional to 6,772,947.79, 9,346,674.26 and 3,872,399.39 is: 5,343,914.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,772,947.79 : 9,346,674.26 = 3,872,399.39 : x
  2. Step 2: Convert to fraction form
    6,772,947.79/9,346,674.26 = 3,872,399.39/x
  3. Step 3: Cross multiply
    6,772,947.79x = 9,346,674.26 × 3,872,399.39
  4. Step 4: Simplify right side
    6,772,947.79x = 36,194,055,702,952.70
  5. Step 5: Solve for x
    x = 36,194,055,702,952.70/6,772,947.79
  6. Step 6: Final answer
    x = 5,343,914.77

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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.