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Finding the Fourth Proportional to 156,858.52, 216,460.39 and 85,236.16

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Solution

The fourth proportional to 156,858.52, 216,460.39 and 85,236.16 is: 117,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,858.52 : 216,460.39 = 85,236.16 : x
  2. Step 2: Convert to fraction form
    156,858.52/216,460.39 = 85,236.16/x
  3. Step 3: Cross multiply
    156,858.52x = 216,460.39 × 85,236.16
  4. Step 4: Simplify right side
    156,858.52x = 18,450,250,927.22
  5. Step 5: Solve for x
    x = 18,450,250,927.22/156,858.52
  6. Step 6: Final answer
    x = 117,623.52

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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.