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Finding the Fourth Proportional to 1,913,896.17, 2,870,748.83 and 715,730.40

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Solution

The fourth proportional to 1,913,896.17, 2,870,748.83 and 715,730.40 is: 1,073,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,896.17 : 2,870,748.83 = 715,730.40 : x
  2. Step 2: Convert to fraction form
    1,913,896.17/2,870,748.83 = 715,730.40/x
  3. Step 3: Cross multiply
    1,913,896.17x = 2,870,748.83 × 715,730.40
  4. Step 4: Simplify right side
    1,913,896.17x = 2,054,682,204,816.78
  5. Step 5: Solve for x
    x = 2,054,682,204,816.78/1,913,896.17
  6. Step 6: Final answer
    x = 1,073,559.91

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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.