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Finding the Fourth Proportional to 1,974,794.06, 2,962,043.28 and 712,621.64

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Solution

The fourth proportional to 1,974,794.06, 2,962,043.28 and 712,621.64 is: 1,068,879.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,794.06 : 2,962,043.28 = 712,621.64 : x
  2. Step 2: Convert to fraction form
    1,974,794.06/2,962,043.28 = 712,621.64/x
  3. Step 3: Cross multiply
    1,974,794.06x = 2,962,043.28 × 712,621.64
  4. Step 4: Simplify right side
    1,974,794.06x = 2,110,816,139,944.58
  5. Step 5: Solve for x
    x = 2,110,816,139,944.58/1,974,794.06
  6. Step 6: Final answer
    x = 1,068,879.12

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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.