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Finding the Fourth Proportional to 140,776.65, 194,225.26 and 86,308.65

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Solution

The fourth proportional to 140,776.65, 194,225.26 and 86,308.65 is: 119,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,776.65 : 194,225.26 = 86,308.65 : x
  2. Step 2: Convert to fraction form
    140,776.65/194,225.26 = 86,308.65/x
  3. Step 3: Cross multiply
    140,776.65x = 194,225.26 × 86,308.65
  4. Step 4: Simplify right side
    140,776.65x = 16,763,319,986.50
  5. Step 5: Solve for x
    x = 16,763,319,986.50/140,776.65
  6. Step 6: Final answer
    x = 119,077.42

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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.