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Finding the Fourth Proportional to 546,643.20, 819,964.80 and 191,693.10

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Solution

The fourth proportional to 546,643.20, 819,964.80 and 191,693.10 is: 287,539.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,643.20 : 819,964.80 = 191,693.10 : x
  2. Step 2: Convert to fraction form
    546,643.20/819,964.80 = 191,693.10/x
  3. Step 3: Cross multiply
    546,643.20x = 819,964.80 × 191,693.10
  4. Step 4: Simplify right side
    546,643.20x = 157,181,594,402.88
  5. Step 5: Solve for x
    x = 157,181,594,402.88/546,643.20
  6. Step 6: Final answer
    x = 287,539.65

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Similar ratio
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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.