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Finding the Fourth Proportional to 1,978.83, 2,730.78 and 1,094.58

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Solution

The fourth proportional to 1,978.83, 2,730.78 and 1,094.58 is: 1,510.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978.83 : 2,730.78 = 1,094.58 : x
  2. Step 2: Convert to fraction form
    1,978.83/2,730.78 = 1,094.58/x
  3. Step 3: Cross multiply
    1,978.83x = 2,730.78 × 1,094.58
  4. Step 4: Simplify right side
    1,978.83x = 2,989,057.17
  5. Step 5: Solve for x
    x = 2,989,057.17/1,978.83
  6. Step 6: Final answer
    x = 1,510.52

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.