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Finding the Fourth Proportional to 291,953.28, 402,900.77 and 171,128.82

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Solution

The fourth proportional to 291,953.28, 402,900.77 and 171,128.82 is: 236,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,953.28 : 402,900.77 = 171,128.82 : x
  2. Step 2: Convert to fraction form
    291,953.28/402,900.77 = 171,128.82/x
  3. Step 3: Cross multiply
    291,953.28x = 402,900.77 × 171,128.82
  4. Step 4: Simplify right side
    291,953.28x = 68,947,933,347.19
  5. Step 5: Solve for x
    x = 68,947,933,347.19/291,953.28
  6. Step 6: Final answer
    x = 236,160.85

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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.