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Finding the Fourth Proportional to 316,188.43, 474,283.46 and 129,199.93

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Solution

The fourth proportional to 316,188.43, 474,283.46 and 129,199.93 is: 193,800.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,188.43 : 474,283.46 = 129,199.93 : x
  2. Step 2: Convert to fraction form
    316,188.43/474,283.46 = 129,199.93/x
  3. Step 3: Cross multiply
    316,188.43x = 474,283.46 × 129,199.93
  4. Step 4: Simplify right side
    316,188.43x = 61,277,389,832.16
  5. Step 5: Solve for x
    x = 61,277,389,832.16/316,188.43
  6. Step 6: Final answer
    x = 193,800.23

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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.