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Finding the Fourth Proportional to 1,055.42, 1,583.12 and 362.08

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Solution

The fourth proportional to 1,055.42, 1,583.12 and 362.08 is: 543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.42 : 1,583.12 = 362.08 : x
  2. Step 2: Convert to fraction form
    1,055.42/1,583.12 = 362.08/x
  3. Step 3: Cross multiply
    1,055.42x = 1,583.12 × 362.08
  4. Step 4: Simplify right side
    1,055.42x = 573,216.09
  5. Step 5: Solve for x
    x = 573,216.09/1,055.42
  6. Step 6: Final answer
    x = 543.12

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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.