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Finding the Fourth Proportional to 211,258.94, 316,675.17 and 132,428.52

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Solution

The fourth proportional to 211,258.94, 316,675.17 and 132,428.52 is: 198,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,258.94 : 316,675.17 = 132,428.52 : x
  2. Step 2: Convert to fraction form
    211,258.94/316,675.17 = 132,428.52/x
  3. Step 3: Cross multiply
    211,258.94x = 316,675.17 × 132,428.52
  4. Step 4: Simplify right side
    211,258.94x = 41,936,824,083.85
  5. Step 5: Solve for x
    x = 41,936,824,083.85/211,258.94
  6. Step 6: Final answer
    x = 198,509.11

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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.