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Finding the Fourth Proportional to 1,136.75, 1,705.53 and 560.03

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Solution

The fourth proportional to 1,136.75, 1,705.53 and 560.03 is: 840.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.75 : 1,705.53 = 560.03 : x
  2. Step 2: Convert to fraction form
    1,136.75/1,705.53 = 560.03/x
  3. Step 3: Cross multiply
    1,136.75x = 1,705.53 × 560.03
  4. Step 4: Simplify right side
    1,136.75x = 955,145.17
  5. Step 5: Solve for x
    x = 955,145.17/1,136.75
  6. Step 6: Final answer
    x = 840.24

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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.