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Finding the Fourth Proportional to 823,948.80, 1,155,187.20 and 823,948.80

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Solution

The fourth proportional to 823,948.80, 1,155,187.20 and 823,948.80 is: 1,155,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,948.80 : 1,155,187.20 = 823,948.80 : x
  2. Step 2: Convert to fraction form
    823,948.80/1,155,187.20 = 823,948.80/x
  3. Step 3: Cross multiply
    823,948.80x = 1,155,187.20 × 823,948.80
  4. Step 4: Simplify right side
    823,948.80x = 951,815,107,215.36
  5. Step 5: Solve for x
    x = 951,815,107,215.36/823,948.80
  6. Step 6: Final answer
    x = 1,155,187.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.