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Finding the Fourth Proportional to 69,502.04, 95,911.76 and 39,286.30

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Solution

The fourth proportional to 69,502.04, 95,911.76 and 39,286.30 is: 54,214.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,502.04 : 95,911.76 = 39,286.30 : x
  2. Step 2: Convert to fraction form
    69,502.04/95,911.76 = 39,286.30/x
  3. Step 3: Cross multiply
    69,502.04x = 95,911.76 × 39,286.30
  4. Step 4: Simplify right side
    69,502.04x = 3,768,018,035.32
  5. Step 5: Solve for x
    x = 3,768,018,035.32/69,502.04
  6. Step 6: Final answer
    x = 54,214.50

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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.