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Finding the Fourth Proportional to 1,386,474, 1,913,006.16 and 805,351.92

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Solution

The fourth proportional to 1,386,474, 1,913,006.16 and 805,351.92 is: 1,111,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,474 : 1,913,006.16 = 805,351.92 : x
  2. Step 2: Convert to fraction form
    1,386,474/1,913,006.16 = 805,351.92/x
  3. Step 3: Cross multiply
    1,386,474x = 1,913,006.16 × 805,351.92
  4. Step 4: Simplify right side
    1,386,474x = 1,540,643,183,927.83
  5. Step 5: Solve for x
    x = 1,540,643,183,927.83/1,386,474
  6. Step 6: Final answer
    x = 1,111,195.15

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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.