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Finding the Fourth Proportional to 318,059.76, 438,913.80 and 174,819.84

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Solution

The fourth proportional to 318,059.76, 438,913.80 and 174,819.84 is: 241,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,059.76 : 438,913.80 = 174,819.84 : x
  2. Step 2: Convert to fraction form
    318,059.76/438,913.80 = 174,819.84/x
  3. Step 3: Cross multiply
    318,059.76x = 438,913.80 × 174,819.84
  4. Step 4: Simplify right side
    318,059.76x = 76,730,840,289.79
  5. Step 5: Solve for x
    x = 76,730,840,289.79/318,059.76
  6. Step 6: Final answer
    x = 241,246.61

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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.