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Finding the Fourth Proportional to 125,476.90, 173,124.32 and 71,750.84

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Solution

The fourth proportional to 125,476.90, 173,124.32 and 71,750.84 is: 98,996.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,476.90 : 173,124.32 = 71,750.84 : x
  2. Step 2: Convert to fraction form
    125,476.90/173,124.32 = 71,750.84/x
  3. Step 3: Cross multiply
    125,476.90x = 173,124.32 × 71,750.84
  4. Step 4: Simplify right side
    125,476.90x = 12,421,815,384.43
  5. Step 5: Solve for x
    x = 12,421,815,384.43/125,476.90
  6. Step 6: Final answer
    x = 98,996.83

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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.