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Finding the Fourth Proportional to 7,169,992.40, 10,754,729.40 and 2,910,040.40

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Solution

The fourth proportional to 7,169,992.40, 10,754,729.40 and 2,910,040.40 is: 4,364,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169,992.40 : 10,754,729.40 = 2,910,040.40 : x
  2. Step 2: Convert to fraction form
    7,169,992.40/10,754,729.40 = 2,910,040.40/x
  3. Step 3: Cross multiply
    7,169,992.40x = 10,754,729.40 × 2,910,040.40
  4. Step 4: Simplify right side
    7,169,992.40x = 31,296,697,045,067.76
  5. Step 5: Solve for x
    x = 31,296,697,045,067.76/7,169,992.40
  6. Step 6: Final answer
    x = 4,364,955.40

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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.