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Finding the Fourth Proportional to 105,636.48, 158,451.48 and 43,260

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Solution

The fourth proportional to 105,636.48, 158,451.48 and 43,260 is: 64,888.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,636.48 : 158,451.48 = 43,260 : x
  2. Step 2: Convert to fraction form
    105,636.48/158,451.48 = 43,260/x
  3. Step 3: Cross multiply
    105,636.48x = 158,451.48 × 43,260
  4. Step 4: Simplify right side
    105,636.48x = 6,854,611,024.80
  5. Step 5: Solve for x
    x = 6,854,611,024.80/105,636.48
  6. Step 6: Final answer
    x = 64,888.67

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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.