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Finding the Fourth Proportional to 162,859.70, 244,281.45 and 83,981.90

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Solution

The fourth proportional to 162,859.70, 244,281.45 and 83,981.90 is: 125,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,859.70 : 244,281.45 = 83,981.90 : x
  2. Step 2: Convert to fraction form
    162,859.70/244,281.45 = 83,981.90/x
  3. Step 3: Cross multiply
    162,859.70x = 244,281.45 × 83,981.90
  4. Step 4: Simplify right side
    162,859.70x = 20,515,220,305.76
  5. Step 5: Solve for x
    x = 20,515,220,305.76/162,859.70
  6. Step 6: Final answer
    x = 125,968.67

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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.