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Finding the Fourth Proportional to 679,082.86, 937,114.77 and 384,705.15

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Solution

The fourth proportional to 679,082.86, 937,114.77 and 384,705.15 is: 530,882.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,082.86 : 937,114.77 = 384,705.15 : x
  2. Step 2: Convert to fraction form
    679,082.86/937,114.77 = 384,705.15/x
  3. Step 3: Cross multiply
    679,082.86x = 937,114.77 × 384,705.15
  4. Step 4: Simplify right side
    679,082.86x = 360,512,873,924.56
  5. Step 5: Solve for x
    x = 360,512,873,924.56/679,082.86
  6. Step 6: Final answer
    x = 530,882.01

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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.