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Finding the Fourth Proportional to 318,557.81, 439,601.70 and 173,357.41

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Solution

The fourth proportional to 318,557.81, 439,601.70 and 173,357.41 is: 239,228.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,557.81 : 439,601.70 = 173,357.41 : x
  2. Step 2: Convert to fraction form
    318,557.81/439,601.70 = 173,357.41/x
  3. Step 3: Cross multiply
    318,557.81x = 439,601.70 × 173,357.41
  4. Step 4: Simplify right side
    318,557.81x = 76,208,211,044.59
  5. Step 5: Solve for x
    x = 76,208,211,044.59/318,557.81
  6. Step 6: Final answer
    x = 239,228.83

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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.