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Finding the Fourth Proportional to 578,533.31, 798,353.92 and 316,884.47

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Solution

The fourth proportional to 578,533.31, 798,353.92 and 316,884.47 is: 437,288.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,533.31 : 798,353.92 = 316,884.47 : x
  2. Step 2: Convert to fraction form
    578,533.31/798,353.92 = 316,884.47/x
  3. Step 3: Cross multiply
    578,533.31x = 798,353.92 × 316,884.47
  4. Step 4: Simplify right side
    578,533.31x = 252,985,953,235.43
  5. Step 5: Solve for x
    x = 252,985,953,235.43/578,533.31
  6. Step 6: Final answer
    x = 437,288.48

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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.