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Finding the Fourth Proportional to 235,946.76, 353,972.70 and 86,186.82

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Solution

The fourth proportional to 235,946.76, 353,972.70 and 86,186.82 is: 129,299.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,946.76 : 353,972.70 = 86,186.82 : x
  2. Step 2: Convert to fraction form
    235,946.76/353,972.70 = 86,186.82/x
  3. Step 3: Cross multiply
    235,946.76x = 353,972.70 × 86,186.82
  4. Step 4: Simplify right side
    235,946.76x = 30,507,781,379.81
  5. Step 5: Solve for x
    x = 30,507,781,379.81/235,946.76
  6. Step 6: Final answer
    x = 129,299.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.