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Finding the Fourth Proportional to 316,573.28, 474,884.62 and 91,937.40

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Solution

The fourth proportional to 316,573.28, 474,884.62 and 91,937.40 is: 137,913.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,573.28 : 474,884.62 = 91,937.40 : x
  2. Step 2: Convert to fraction form
    316,573.28/474,884.62 = 91,937.40/x
  3. Step 3: Cross multiply
    316,573.28x = 474,884.62 × 91,937.40
  4. Step 4: Simplify right side
    316,573.28x = 43,659,657,262.79
  5. Step 5: Solve for x
    x = 43,659,657,262.79/316,573.28
  6. Step 6: Final answer
    x = 137,913.27

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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.