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Finding the Fourth Proportional to 347,192.64, 520,985.66 and 136,978.20

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Solution

The fourth proportional to 347,192.64, 520,985.66 and 136,978.20 is: 205,544.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,192.64 : 520,985.66 = 136,978.20 : x
  2. Step 2: Convert to fraction form
    347,192.64/520,985.66 = 136,978.20/x
  3. Step 3: Cross multiply
    347,192.64x = 520,985.66 × 136,978.20
  4. Step 4: Simplify right side
    347,192.64x = 71,363,677,932.61
  5. Step 5: Solve for x
    x = 71,363,677,932.61/347,192.64
  6. Step 6: Final answer
    x = 205,544.90

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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.