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Finding the Fourth Proportional to 1,116,585, 1,540,230.66 and 663,849

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Solution

The fourth proportional to 1,116,585, 1,540,230.66 and 663,849 is: 915,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116,585 : 1,540,230.66 = 663,849 : x
  2. Step 2: Convert to fraction form
    1,116,585/1,540,230.66 = 663,849/x
  3. Step 3: Cross multiply
    1,116,585x = 1,540,230.66 × 663,849
  4. Step 4: Simplify right side
    1,116,585x = 1,022,480,583,410.34
  5. Step 5: Solve for x
    x = 1,022,480,583,410.34/1,116,585
  6. Step 6: Final answer
    x = 915,721.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.