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Finding the Fourth Proportional to 263,937.60, 395,902.80 and 86,450.40

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Solution

The fourth proportional to 263,937.60, 395,902.80 and 86,450.40 is: 129,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,937.60 : 395,902.80 = 86,450.40 : x
  2. Step 2: Convert to fraction form
    263,937.60/395,902.80 = 86,450.40/x
  3. Step 3: Cross multiply
    263,937.60x = 395,902.80 × 86,450.40
  4. Step 4: Simplify right side
    263,937.60x = 34,225,955,421.12
  5. Step 5: Solve for x
    x = 34,225,955,421.12/263,937.60
  6. Step 6: Final answer
    x = 129,674.42

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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.