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Finding the Fourth Proportional to 393,466.90, 590,200.35 and 156,979.30

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Solution

The fourth proportional to 393,466.90, 590,200.35 and 156,979.30 is: 235,468.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,466.90 : 590,200.35 = 156,979.30 : x
  2. Step 2: Convert to fraction form
    393,466.90/590,200.35 = 156,979.30/x
  3. Step 3: Cross multiply
    393,466.90x = 590,200.35 × 156,979.30
  4. Step 4: Simplify right side
    393,466.90x = 92,649,237,802.76
  5. Step 5: Solve for x
    x = 92,649,237,802.76/393,466.90
  6. Step 6: Final answer
    x = 235,468.95

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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.