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Finding the Fourth Proportional to 1,922,568.60, 2,879,916.30 and 976,472.40

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Solution

The fourth proportional to 1,922,568.60, 2,879,916.30 and 976,472.40 is: 1,462,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922,568.60 : 2,879,916.30 = 976,472.40 : x
  2. Step 2: Convert to fraction form
    1,922,568.60/2,879,916.30 = 976,472.40/x
  3. Step 3: Cross multiply
    1,922,568.60x = 2,879,916.30 × 976,472.40
  4. Step 4: Simplify right side
    1,922,568.60x = 2,812,158,781,260.12
  5. Step 5: Solve for x
    x = 2,812,158,781,260.12/1,922,568.60
  6. Step 6: Final answer
    x = 1,462,709.20

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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.