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Finding the Fourth Proportional to 935,781.60, 1,401,704.10 and 778,317.60

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Solution

The fourth proportional to 935,781.60, 1,401,704.10 and 778,317.60 is: 1,165,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,781.60 : 1,401,704.10 = 778,317.60 : x
  2. Step 2: Convert to fraction form
    935,781.60/1,401,704.10 = 778,317.60/x
  3. Step 3: Cross multiply
    935,781.60x = 1,401,704.10 × 778,317.60
  4. Step 4: Simplify right side
    935,781.60x = 1,090,970,971,022.16
  5. Step 5: Solve for x
    x = 1,090,970,971,022.16/935,781.60
  6. Step 6: Final answer
    x = 1,165,839.31

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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.