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Finding the Fourth Proportional to 7,208,668.64, 9,946,892.56 and 4,378,242.32

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Solution

The fourth proportional to 7,208,668.64, 9,946,892.56 and 4,378,242.32 is: 6,041,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208,668.64 : 9,946,892.56 = 4,378,242.32 : x
  2. Step 2: Convert to fraction form
    7,208,668.64/9,946,892.56 = 4,378,242.32/x
  3. Step 3: Cross multiply
    7,208,668.64x = 9,946,892.56 × 4,378,242.32
  4. Step 4: Simplify right side
    7,208,668.64x = 43,549,905,958,685.14
  5. Step 5: Solve for x
    x = 43,549,905,958,685.14/7,208,668.64
  6. Step 6: Final answer
    x = 6,041,324.43

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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.