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Finding the Fourth Proportional to 156,792.30, 235,210.05 and 68,043.30

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Solution

The fourth proportional to 156,792.30, 235,210.05 and 68,043.30 is: 102,074.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,792.30 : 235,210.05 = 68,043.30 : x
  2. Step 2: Convert to fraction form
    156,792.30/235,210.05 = 68,043.30/x
  3. Step 3: Cross multiply
    156,792.30x = 235,210.05 × 68,043.30
  4. Step 4: Simplify right side
    156,792.30x = 16,004,467,995.17
  5. Step 5: Solve for x
    x = 16,004,467,995.17/156,792.30
  6. Step 6: Final answer
    x = 102,074.32

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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.