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Finding the Fourth Proportional to 93,142.80, 139,714.20 and 67,093.20

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Solution

The fourth proportional to 93,142.80, 139,714.20 and 67,093.20 is: 100,639.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,142.80 : 139,714.20 = 67,093.20 : x
  2. Step 2: Convert to fraction form
    93,142.80/139,714.20 = 67,093.20/x
  3. Step 3: Cross multiply
    93,142.80x = 139,714.20 × 67,093.20
  4. Step 4: Simplify right side
    93,142.80x = 9,373,872,763.44
  5. Step 5: Solve for x
    x = 9,373,872,763.44/93,142.80
  6. Step 6: Final answer
    x = 100,639.80

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1.5x scale

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.