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Finding the Fourth Proportional to 9,993,812.88, 13,791,458.88 and 5,410,130.88

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Solution

The fourth proportional to 9,993,812.88, 13,791,458.88 and 5,410,130.88 is: 7,465,979.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993,812.88 : 13,791,458.88 = 5,410,130.88 : x
  2. Step 2: Convert to fraction form
    9,993,812.88/13,791,458.88 = 5,410,130.88/x
  3. Step 3: Cross multiply
    9,993,812.88x = 13,791,458.88 × 5,410,130.88
  4. Step 4: Simplify right side
    9,993,812.88x = 74,613,597,566,938.22
  5. Step 5: Solve for x
    x = 74,613,597,566,938.22/9,993,812.88
  6. Step 6: Final answer
    x = 7,465,979.05

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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.