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Finding the Fourth Proportional to 5,870.70, 8,803.17 and 2,905.72

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Solution

The fourth proportional to 5,870.70, 8,803.17 and 2,905.72 is: 4,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,870.70 : 8,803.17 = 2,905.72 : x
  2. Step 2: Convert to fraction form
    5,870.70/8,803.17 = 2,905.72/x
  3. Step 3: Cross multiply
    5,870.70x = 8,803.17 × 2,905.72
  4. Step 4: Simplify right side
    5,870.70x = 25,579,525.12
  5. Step 5: Solve for x
    x = 25,579,525.12/5,870.70
  6. Step 6: Final answer
    x = 4,357.15

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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.