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Finding the Fourth Proportional to 153,793.24, 212,273.34 and 86,764.12

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Solution

The fourth proportional to 153,793.24, 212,273.34 and 86,764.12 is: 119,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,793.24 : 212,273.34 = 86,764.12 : x
  2. Step 2: Convert to fraction form
    153,793.24/212,273.34 = 86,764.12/x
  3. Step 3: Cross multiply
    153,793.24x = 212,273.34 × 86,764.12
  4. Step 4: Simplify right side
    153,793.24x = 18,417,709,544.56
  5. Step 5: Solve for x
    x = 18,417,709,544.56/153,793.24
  6. Step 6: Final answer
    x = 119,756.30

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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.