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Finding the Fourth Proportional to 922,910.70, 1,384,366.05 and 686,714.70

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Solution

The fourth proportional to 922,910.70, 1,384,366.05 and 686,714.70 is: 1,030,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,910.70 : 1,384,366.05 = 686,714.70 : x
  2. Step 2: Convert to fraction form
    922,910.70/1,384,366.05 = 686,714.70/x
  3. Step 3: Cross multiply
    922,910.70x = 1,384,366.05 × 686,714.70
  4. Step 4: Simplify right side
    922,910.70x = 950,664,516,715.94
  5. Step 5: Solve for x
    x = 950,664,516,715.94/922,910.70
  6. Step 6: Final answer
    x = 1,030,072.05

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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.