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Finding the Fourth Proportional to 1,051.85, 1,451.68 and 632.22

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Solution

The fourth proportional to 1,051.85, 1,451.68 and 632.22 is: 872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.85 : 1,451.68 = 632.22 : x
  2. Step 2: Convert to fraction form
    1,051.85/1,451.68 = 632.22/x
  3. Step 3: Cross multiply
    1,051.85x = 1,451.68 × 632.22
  4. Step 4: Simplify right side
    1,051.85x = 917,776.59
  5. Step 5: Solve for x
    x = 917,776.59/1,051.85
  6. Step 6: Final answer
    x = 872.54

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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.