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Finding the Fourth Proportional to 1,675.93, 2,312.92 and 929.96

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Solution

The fourth proportional to 1,675.93, 2,312.92 and 929.96 is: 1,283.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.93 : 2,312.92 = 929.96 : x
  2. Step 2: Convert to fraction form
    1,675.93/2,312.92 = 929.96/x
  3. Step 3: Cross multiply
    1,675.93x = 2,312.92 × 929.96
  4. Step 4: Simplify right side
    1,675.93x = 2,150,918.43
  5. Step 5: Solve for x
    x = 2,150,918.43/1,675.93
  6. Step 6: Final answer
    x = 1,283.42

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Why These Related Problems?

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