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Finding the Fourth Proportional to 922,908.70, 1,384,363.05 and 686,712.70

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Solution

The fourth proportional to 922,908.70, 1,384,363.05 and 686,712.70 is: 1,030,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,908.70 : 1,384,363.05 = 686,712.70 : x
  2. Step 2: Convert to fraction form
    922,908.70/1,384,363.05 = 686,712.70/x
  3. Step 3: Cross multiply
    922,908.70x = 1,384,363.05 × 686,712.70
  4. Step 4: Simplify right side
    922,908.70x = 950,659,687,845.74
  5. Step 5: Solve for x
    x = 950,659,687,845.74/922,908.70
  6. Step 6: Final answer
    x = 1,030,069.05

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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.