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Finding the Fourth Proportional to 235,063.31, 324,378.55 and 127,631.03

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Solution

The fourth proportional to 235,063.31, 324,378.55 and 127,631.03 is: 176,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,063.31 : 324,378.55 = 127,631.03 : x
  2. Step 2: Convert to fraction form
    235,063.31/324,378.55 = 127,631.03/x
  3. Step 3: Cross multiply
    235,063.31x = 324,378.55 × 127,631.03
  4. Step 4: Simplify right side
    235,063.31x = 41,400,768,938.28
  5. Step 5: Solve for x
    x = 41,400,768,938.28/235,063.31
  6. Step 6: Final answer
    x = 176,126.04

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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.