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Finding the Fourth Proportional to 235,996.19, 325,678.28 and 128,566.19

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Solution

The fourth proportional to 235,996.19, 325,678.28 and 128,566.19 is: 177,423.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,996.19 : 325,678.28 = 128,566.19 : x
  2. Step 2: Convert to fraction form
    235,996.19/325,678.28 = 128,566.19/x
  3. Step 3: Cross multiply
    235,996.19x = 325,678.28 × 128,566.19
  4. Step 4: Simplify right side
    235,996.19x = 41,871,215,796.72
  5. Step 5: Solve for x
    x = 41,871,215,796.72/235,996.19
  6. Step 6: Final answer
    x = 177,423.27

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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.