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Finding the Fourth Proportional to 543,742.88, 815,622.52 and 188,768.17

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Solution

The fourth proportional to 543,742.88, 815,622.52 and 188,768.17 is: 283,155.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,742.88 : 815,622.52 = 188,768.17 : x
  2. Step 2: Convert to fraction form
    543,742.88/815,622.52 = 188,768.17/x
  3. Step 3: Cross multiply
    543,742.88x = 815,622.52 × 188,768.17
  4. Step 4: Simplify right side
    543,742.88x = 153,963,572,979.87
  5. Step 5: Solve for x
    x = 153,963,572,979.87/543,742.88
  6. Step 6: Final answer
    x = 283,155.11

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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.