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Finding the Fourth Proportional to 129,598.64, 178,843.32 and 73,009.04

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Solution

The fourth proportional to 129,598.64, 178,843.32 and 73,009.04 is: 100,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,598.64 : 178,843.32 = 73,009.04 : x
  2. Step 2: Convert to fraction form
    129,598.64/178,843.32 = 73,009.04/x
  3. Step 3: Cross multiply
    129,598.64x = 178,843.32 × 73,009.04
  4. Step 4: Simplify right side
    129,598.64x = 13,057,179,103.61
  5. Step 5: Solve for x
    x = 13,057,179,103.61/129,598.64
  6. Step 6: Final answer
    x = 100,750.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.