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Finding the Fourth Proportional to 1,429.79, 1,973.07 and 800.32

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Solution

The fourth proportional to 1,429.79, 1,973.07 and 800.32 is: 1,104.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.79 : 1,973.07 = 800.32 : x
  2. Step 2: Convert to fraction form
    1,429.79/1,973.07 = 800.32/x
  3. Step 3: Cross multiply
    1,429.79x = 1,973.07 × 800.32
  4. Step 4: Simplify right side
    1,429.79x = 1,579,087.38
  5. Step 5: Solve for x
    x = 1,579,087.38/1,429.79
  6. Step 6: Final answer
    x = 1,104.42

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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.