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Finding the Fourth Proportional to 382,688.70, 574,116.10 and 116,442.30

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Solution

The fourth proportional to 382,688.70, 574,116.10 and 116,442.30 is: 174,688.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,688.70 : 574,116.10 = 116,442.30 : x
  2. Step 2: Convert to fraction form
    382,688.70/574,116.10 = 116,442.30/x
  3. Step 3: Cross multiply
    382,688.70x = 574,116.10 × 116,442.30
  4. Step 4: Simplify right side
    382,688.70x = 66,851,399,151.03
  5. Step 5: Solve for x
    x = 66,851,399,151.03/382,688.70
  6. Step 6: Final answer
    x = 174,688.72

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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.