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Finding the Fourth Proportional to 356,684.90, 534,871.76 and 134,913.38

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Solution

The fourth proportional to 356,684.90, 534,871.76 and 134,913.38 is: 202,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,684.90 : 534,871.76 = 134,913.38 : x
  2. Step 2: Convert to fraction form
    356,684.90/534,871.76 = 134,913.38/x
  3. Step 3: Cross multiply
    356,684.90x = 534,871.76 × 134,913.38
  4. Step 4: Simplify right side
    356,684.90x = 72,161,353,659.22
  5. Step 5: Solve for x
    x = 72,161,353,659.22/356,684.90
  6. Step 6: Final answer
    x = 202,311.21

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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.