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Finding the Fourth Proportional to 1,068.74, 1,599.06 and 933.56

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Solution

The fourth proportional to 1,068.74, 1,599.06 and 933.56 is: 1,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.74 : 1,599.06 = 933.56 : x
  2. Step 2: Convert to fraction form
    1,068.74/1,599.06 = 933.56/x
  3. Step 3: Cross multiply
    1,068.74x = 1,599.06 × 933.56
  4. Step 4: Simplify right side
    1,068.74x = 1,492,818.45
  5. Step 5: Solve for x
    x = 1,492,818.45/1,068.74
  6. Step 6: Final answer
    x = 1,396.80

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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.