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Finding the Fourth Proportional to 123,953.58, 170,859.65 and 113,656.46

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Solution

The fourth proportional to 123,953.58, 170,859.65 and 113,656.46 is: 156,665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,953.58 : 170,859.65 = 113,656.46 : x
  2. Step 2: Convert to fraction form
    123,953.58/170,859.65 = 113,656.46/x
  3. Step 3: Cross multiply
    123,953.58x = 170,859.65 × 113,656.46
  4. Step 4: Simplify right side
    123,953.58x = 19,419,301,553.26
  5. Step 5: Solve for x
    x = 19,419,301,553.26/123,953.58
  6. Step 6: Final answer
    x = 156,665.92

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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.