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Finding the Fourth Proportional to 347,197.78, 520,838.28 and 122,511.78

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Solution

The fourth proportional to 347,197.78, 520,838.28 and 122,511.78 is: 183,782.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,197.78 : 520,838.28 = 122,511.78 : x
  2. Step 2: Convert to fraction form
    347,197.78/520,838.28 = 122,511.78/x
  3. Step 3: Cross multiply
    347,197.78x = 520,838.28 × 122,511.78
  4. Step 4: Simplify right side
    347,197.78x = 63,808,824,774.94
  5. Step 5: Solve for x
    x = 63,808,824,774.94/347,197.78
  6. Step 6: Final answer
    x = 183,782.35

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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.