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Finding the Fourth Proportional to 1,581,826.98, 2,182,908.95 and 856,657.88

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Solution

The fourth proportional to 1,581,826.98, 2,182,908.95 and 856,657.88 is: 1,182,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,826.98 : 2,182,908.95 = 856,657.88 : x
  2. Step 2: Convert to fraction form
    1,581,826.98/2,182,908.95 = 856,657.88/x
  3. Step 3: Cross multiply
    1,581,826.98x = 2,182,908.95 × 856,657.88
  4. Step 4: Simplify right side
    1,581,826.98x = 1,870,006,138,142.19
  5. Step 5: Solve for x
    x = 1,870,006,138,142.19/1,581,826.98
  6. Step 6: Final answer
    x = 1,182,181.21

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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.