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Finding the Fourth Proportional to 235,409.88, 324,871.92 and 127,987.16

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Solution

The fourth proportional to 235,409.88, 324,871.92 and 127,987.16 is: 176,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,409.88 : 324,871.92 = 127,987.16 : x
  2. Step 2: Convert to fraction form
    235,409.88/324,871.92 = 127,987.16/x
  3. Step 3: Cross multiply
    235,409.88x = 324,871.92 × 127,987.16
  4. Step 4: Simplify right side
    235,409.88x = 41,579,434,404.55
  5. Step 5: Solve for x
    x = 41,579,434,404.55/235,409.88
  6. Step 6: Final answer
    x = 176,625.70

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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.