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Finding the Fourth Proportional to 786,843.90, 1,180,265.85 and 773,721.90

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Solution

The fourth proportional to 786,843.90, 1,180,265.85 and 773,721.90 is: 1,160,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,843.90 : 1,180,265.85 = 773,721.90 : x
  2. Step 2: Convert to fraction form
    786,843.90/1,180,265.85 = 773,721.90/x
  3. Step 3: Cross multiply
    786,843.90x = 1,180,265.85 × 773,721.90
  4. Step 4: Simplify right side
    786,843.90x = 913,197,535,967.12
  5. Step 5: Solve for x
    x = 913,197,535,967.12/786,843.90
  6. Step 6: Final answer
    x = 1,160,582.85

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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.