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Finding the Fourth Proportional to 1,055.52, 1,582.74 and 362.16

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Solution

The fourth proportional to 1,055.52, 1,582.74 and 362.16 is: 543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.52 : 1,582.74 = 362.16 : x
  2. Step 2: Convert to fraction form
    1,055.52/1,582.74 = 362.16/x
  3. Step 3: Cross multiply
    1,055.52x = 1,582.74 × 362.16
  4. Step 4: Simplify right side
    1,055.52x = 573,205.12
  5. Step 5: Solve for x
    x = 573,205.12/1,055.52
  6. Step 6: Final answer
    x = 543.05

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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.