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Finding the Fourth Proportional to 1,162.35, 1,742.99 and 503.91

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Solution

The fourth proportional to 1,162.35, 1,742.99 and 503.91 is: 755.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,162.35 : 1,742.99 = 503.91 : x
  2. Step 2: Convert to fraction form
    1,162.35/1,742.99 = 503.91/x
  3. Step 3: Cross multiply
    1,162.35x = 1,742.99 × 503.91
  4. Step 4: Simplify right side
    1,162.35x = 878,307.57
  5. Step 5: Solve for x
    x = 878,307.57/1,162.35
  6. Step 6: Final answer
    x = 755.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.