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Finding the Fourth Proportional to 123,917.87, 171,015.11 and 70,203.32

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Solution

The fourth proportional to 123,917.87, 171,015.11 and 70,203.32 is: 96,885.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,917.87 : 171,015.11 = 70,203.32 : x
  2. Step 2: Convert to fraction form
    123,917.87/171,015.11 = 70,203.32/x
  3. Step 3: Cross multiply
    123,917.87x = 171,015.11 × 70,203.32
  4. Step 4: Simplify right side
    123,917.87x = 12,005,829,095.21
  5. Step 5: Solve for x
    x = 12,005,829,095.21/123,917.87
  6. Step 6: Final answer
    x = 96,885.38

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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.