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Finding the Fourth Proportional to 79,688.84, 119,523.75 and 26,380.91

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Solution

The fourth proportional to 79,688.84, 119,523.75 and 26,380.91 is: 39,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,688.84 : 119,523.75 = 26,380.91 : x
  2. Step 2: Convert to fraction form
    79,688.84/119,523.75 = 26,380.91/x
  3. Step 3: Cross multiply
    79,688.84x = 119,523.75 × 26,380.91
  4. Step 4: Simplify right side
    79,688.84x = 3,153,144,693.99
  5. Step 5: Solve for x
    x = 3,153,144,693.99/79,688.84
  6. Step 6: Final answer
    x = 39,568.21

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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.