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Finding the Fourth Proportional to 1,049.88, 1,573.32 and 561.84

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Solution

The fourth proportional to 1,049.88, 1,573.32 and 561.84 is: 841.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.88 : 1,573.32 = 561.84 : x
  2. Step 2: Convert to fraction form
    1,049.88/1,573.32 = 561.84/x
  3. Step 3: Cross multiply
    1,049.88x = 1,573.32 × 561.84
  4. Step 4: Simplify right side
    1,049.88x = 883,954.11
  5. Step 5: Solve for x
    x = 883,954.11/1,049.88
  6. Step 6: Final answer
    x = 841.96

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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.