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Finding the Fourth Proportional to 1,316.43, 1,975.32 and 586.53

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Solution

The fourth proportional to 1,316.43, 1,975.32 and 586.53 is: 880.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.43 : 1,975.32 = 586.53 : x
  2. Step 2: Convert to fraction form
    1,316.43/1,975.32 = 586.53/x
  3. Step 3: Cross multiply
    1,316.43x = 1,975.32 × 586.53
  4. Step 4: Simplify right side
    1,316.43x = 1,158,584.44
  5. Step 5: Solve for x
    x = 1,158,584.44/1,316.43
  6. Step 6: Final answer
    x = 880.10

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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.