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Finding the Fourth Proportional to 977,757.70, 1,463,684.10 and 859,659.70

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Solution

The fourth proportional to 977,757.70, 1,463,684.10 and 859,659.70 is: 1,286,893.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,757.70 : 1,463,684.10 = 859,659.70 : x
  2. Step 2: Convert to fraction form
    977,757.70/1,463,684.10 = 859,659.70/x
  3. Step 3: Cross multiply
    977,757.70x = 1,463,684.10 × 859,659.70
  4. Step 4: Simplify right side
    977,757.70x = 1,258,270,234,300.77
  5. Step 5: Solve for x
    x = 1,258,270,234,300.77/977,757.70
  6. Step 6: Final answer
    x = 1,286,893.71

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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.