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Finding the Fourth Proportional to 578,533.81, 798,354.60 and 316,884.97

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Solution

The fourth proportional to 578,533.81, 798,354.60 and 316,884.97 is: 437,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,533.81 : 798,354.60 = 316,884.97 : x
  2. Step 2: Convert to fraction form
    578,533.81/798,354.60 = 316,884.97/x
  3. Step 3: Cross multiply
    578,533.81x = 798,354.60 × 316,884.97
  4. Step 4: Simplify right side
    578,533.81x = 252,986,573,470.36
  5. Step 5: Solve for x
    x = 252,986,573,470.36/578,533.81
  6. Step 6: Final answer
    x = 437,289.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.