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Finding the Fourth Proportional to 235,934.40, 353,318.40 and 156,619.20

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Solution

The fourth proportional to 235,934.40, 353,318.40 and 156,619.20 is: 234,541.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,934.40 : 353,318.40 = 156,619.20 : x
  2. Step 2: Convert to fraction form
    235,934.40/353,318.40 = 156,619.20/x
  3. Step 3: Cross multiply
    235,934.40x = 353,318.40 × 156,619.20
  4. Step 4: Simplify right side
    235,934.40x = 55,336,445,153.28
  5. Step 5: Solve for x
    x = 55,336,445,153.28/235,934.40
  6. Step 6: Final answer
    x = 234,541.66

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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.