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Finding the Fourth Proportional to 237,716.96, 328,046.64 and 128,819.12

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Solution

The fourth proportional to 237,716.96, 328,046.64 and 128,819.12 is: 177,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,716.96 : 328,046.64 = 128,819.12 : x
  2. Step 2: Convert to fraction form
    237,716.96/328,046.64 = 128,819.12/x
  3. Step 3: Cross multiply
    237,716.96x = 328,046.64 × 128,819.12
  4. Step 4: Simplify right side
    237,716.96x = 42,258,679,483.76
  5. Step 5: Solve for x
    x = 42,258,679,483.76/237,716.96
  6. Step 6: Final answer
    x = 177,768.89

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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.