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Finding the Fourth Proportional to 343,603.78, 474,196.90 and 192,710.50

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Solution

The fourth proportional to 343,603.78, 474,196.90 and 192,710.50 is: 265,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,603.78 : 474,196.90 = 192,710.50 : x
  2. Step 2: Convert to fraction form
    343,603.78/474,196.90 = 192,710.50/x
  3. Step 3: Cross multiply
    343,603.78x = 474,196.90 × 192,710.50
  4. Step 4: Simplify right side
    343,603.78x = 91,382,721,697.45
  5. Step 5: Solve for x
    x = 91,382,721,697.45/343,603.78
  6. Step 6: Final answer
    x = 265,953.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.