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Finding the Fourth Proportional to 389,790.15, 584,685.18 and 146,676.93

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Solution

The fourth proportional to 389,790.15, 584,685.18 and 146,676.93 is: 220,015.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,790.15 : 584,685.18 = 146,676.93 : x
  2. Step 2: Convert to fraction form
    389,790.15/584,685.18 = 146,676.93/x
  3. Step 3: Cross multiply
    389,790.15x = 584,685.18 × 146,676.93
  4. Step 4: Simplify right side
    389,790.15x = 85,759,827,218.90
  5. Step 5: Solve for x
    x = 85,759,827,218.90/389,790.15
  6. Step 6: Final answer
    x = 220,015.38

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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.