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Finding the Fourth Proportional to 922,781.80, 1,384,172.70 and 910,340.20

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Solution

The fourth proportional to 922,781.80, 1,384,172.70 and 910,340.20 is: 1,365,510.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,781.80 : 1,384,172.70 = 910,340.20 : x
  2. Step 2: Convert to fraction form
    922,781.80/1,384,172.70 = 910,340.20/x
  3. Step 3: Cross multiply
    922,781.80x = 1,384,172.70 × 910,340.20
  4. Step 4: Simplify right side
    922,781.80x = 1,260,068,052,552.54
  5. Step 5: Solve for x
    x = 1,260,068,052,552.54/922,781.80
  6. Step 6: Final answer
    x = 1,365,510.30

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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.