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Finding the Fourth Proportional to 456,506.30, 684,759.45 and 156,960.20

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Solution

The fourth proportional to 456,506.30, 684,759.45 and 156,960.20 is: 235,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,506.30 : 684,759.45 = 156,960.20 : x
  2. Step 2: Convert to fraction form
    456,506.30/684,759.45 = 156,960.20/x
  3. Step 3: Cross multiply
    456,506.30x = 684,759.45 × 156,960.20
  4. Step 4: Simplify right side
    456,506.30x = 107,479,980,223.89
  5. Step 5: Solve for x
    x = 107,479,980,223.89/456,506.30
  6. Step 6: Final answer
    x = 235,440.30

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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.