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Finding the Fourth Proportional to 763,781.64, 1,054,052.02 and 424,249.89

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Solution

The fourth proportional to 763,781.64, 1,054,052.02 and 424,249.89 is: 585,483.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,781.64 : 1,054,052.02 = 424,249.89 : x
  2. Step 2: Convert to fraction form
    763,781.64/1,054,052.02 = 424,249.89/x
  3. Step 3: Cross multiply
    763,781.64x = 1,054,052.02 × 424,249.89
  4. Step 4: Simplify right side
    763,781.64x = 447,181,453,539.28
  5. Step 5: Solve for x
    x = 447,181,453,539.28/763,781.64
  6. Step 6: Final answer
    x = 585,483.38

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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.