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Finding the Fourth Proportional to 1,770.93, 2,656.70 and 730.36

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Solution

The fourth proportional to 1,770.93, 2,656.70 and 730.36 is: 1,095.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.93 : 2,656.70 = 730.36 : x
  2. Step 2: Convert to fraction form
    1,770.93/2,656.70 = 730.36/x
  3. Step 3: Cross multiply
    1,770.93x = 2,656.70 × 730.36
  4. Step 4: Simplify right side
    1,770.93x = 1,940,349.82
  5. Step 5: Solve for x
    x = 1,940,349.82/1,770.93
  6. Step 6: Final answer
    x = 1,095.67

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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.