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Finding the Fourth Proportional to 521,170.90, 781,871.07 and 296,636.98

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Solution

The fourth proportional to 521,170.90, 781,871.07 and 296,636.98 is: 445,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,170.90 : 781,871.07 = 296,636.98 : x
  2. Step 2: Convert to fraction form
    521,170.90/781,871.07 = 296,636.98/x
  3. Step 3: Cross multiply
    521,170.90x = 781,871.07 × 296,636.98
  4. Step 4: Simplify right side
    521,170.90x = 231,931,872,954.17
  5. Step 5: Solve for x
    x = 231,931,872,954.17/521,170.90
  6. Step 6: Final answer
    x = 445,020.77

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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.