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Finding the Fourth Proportional to 86,503.60, 129,709.15 and 44,366.48

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Solution

The fourth proportional to 86,503.60, 129,709.15 and 44,366.48 is: 66,526.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,503.60 : 129,709.15 = 44,366.48 : x
  2. Step 2: Convert to fraction form
    86,503.60/129,709.15 = 44,366.48/x
  3. Step 3: Cross multiply
    86,503.60x = 129,709.15 × 44,366.48
  4. Step 4: Simplify right side
    86,503.60x = 5,754,738,865.85
  5. Step 5: Solve for x
    x = 5,754,738,865.85/86,503.60
  6. Step 6: Final answer
    x = 66,526.01

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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.