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Finding the Fourth Proportional to 982,866.84, 1,356,774.74 and 660,763.75

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Solution

The fourth proportional to 982,866.84, 1,356,774.74 and 660,763.75 is: 912,135.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,866.84 : 1,356,774.74 = 660,763.75 : x
  2. Step 2: Convert to fraction form
    982,866.84/1,356,774.74 = 660,763.75/x
  3. Step 3: Cross multiply
    982,866.84x = 1,356,774.74 × 660,763.75
  4. Step 4: Simplify right side
    982,866.84x = 896,507,565,107.68
  5. Step 5: Solve for x
    x = 896,507,565,107.68/982,866.84
  6. Step 6: Final answer
    x = 912,135.33

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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.