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Finding the Fourth Proportional to 316,457.66, 436,722.68 and 173,217.82

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Solution

The fourth proportional to 316,457.66, 436,722.68 and 173,217.82 is: 239,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,457.66 : 436,722.68 = 173,217.82 : x
  2. Step 2: Convert to fraction form
    316,457.66/436,722.68 = 173,217.82/x
  3. Step 3: Cross multiply
    316,457.66x = 436,722.68 × 173,217.82
  4. Step 4: Simplify right side
    316,457.66x = 75,648,150,574.16
  5. Step 5: Solve for x
    x = 75,648,150,574.16/316,457.66
  6. Step 6: Final answer
    x = 239,046.67

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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.