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Finding the Fourth Proportional to 1,925.71, 2,657.43 and 1,086.42

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Solution

The fourth proportional to 1,925.71, 2,657.43 and 1,086.42 is: 1,499.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,925.71 : 2,657.43 = 1,086.42 : x
  2. Step 2: Convert to fraction form
    1,925.71/2,657.43 = 1,086.42/x
  3. Step 3: Cross multiply
    1,925.71x = 2,657.43 × 1,086.42
  4. Step 4: Simplify right side
    1,925.71x = 2,887,085.10
  5. Step 5: Solve for x
    x = 2,887,085.10/1,925.71
  6. Step 6: Final answer
    x = 1,499.23

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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.