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Finding the Fourth Proportional to 1,583,867.70, 2,185,730.52 and 858,713.16

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Solution

The fourth proportional to 1,583,867.70, 2,185,730.52 and 858,713.16 is: 1,185,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583,867.70 : 2,185,730.52 = 858,713.16 : x
  2. Step 2: Convert to fraction form
    1,583,867.70/2,185,730.52 = 858,713.16/x
  3. Step 3: Cross multiply
    1,583,867.70x = 2,185,730.52 × 858,713.16
  4. Step 4: Simplify right side
    1,583,867.70x = 1,876,915,561,737.64
  5. Step 5: Solve for x
    x = 1,876,915,561,737.64/1,583,867.70
  6. Step 6: Final answer
    x = 1,185,020.42

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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.