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Finding the Fourth Proportional to 172,094.60, 257,631.60 and 127,917.20

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Solution

The fourth proportional to 172,094.60, 257,631.60 and 127,917.20 is: 191,496.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,094.60 : 257,631.60 = 127,917.20 : x
  2. Step 2: Convert to fraction form
    172,094.60/257,631.60 = 127,917.20/x
  3. Step 3: Cross multiply
    172,094.60x = 257,631.60 × 127,917.20
  4. Step 4: Simplify right side
    172,094.60x = 32,955,512,903.52
  5. Step 5: Solve for x
    x = 32,955,512,903.52/172,094.60
  6. Step 6: Final answer
    x = 191,496.50

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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.