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Finding the Fourth Proportional to 922,770.20, 1,384,155.30 and 916,549.40

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Solution

The fourth proportional to 922,770.20, 1,384,155.30 and 916,549.40 is: 1,374,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,770.20 : 1,384,155.30 = 916,549.40 : x
  2. Step 2: Convert to fraction form
    922,770.20/1,384,155.30 = 916,549.40/x
  3. Step 3: Cross multiply
    922,770.20x = 1,384,155.30 × 916,549.40
  4. Step 4: Simplify right side
    922,770.20x = 1,268,646,709,721.82
  5. Step 5: Solve for x
    x = 1,268,646,709,721.82/922,770.20
  6. Step 6: Final answer
    x = 1,374,824.10

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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.