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Finding the Fourth Proportional to 1,218,533.80, 1,827,800.70 and 863,948.20

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Solution

The fourth proportional to 1,218,533.80, 1,827,800.70 and 863,948.20 is: 1,295,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,533.80 : 1,827,800.70 = 863,948.20 : x
  2. Step 2: Convert to fraction form
    1,218,533.80/1,827,800.70 = 863,948.20/x
  3. Step 3: Cross multiply
    1,218,533.80x = 1,827,800.70 × 863,948.20
  4. Step 4: Simplify right side
    1,218,533.80x = 1,579,125,124,723.74
  5. Step 5: Solve for x
    x = 1,579,125,124,723.74/1,218,533.80
  6. Step 6: Final answer
    x = 1,295,922.30

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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.