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Finding the Fourth Proportional to 118,459.56, 163,462.95 and 64,741.17

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Solution

The fourth proportional to 118,459.56, 163,462.95 and 64,741.17 is: 89,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,459.56 : 163,462.95 = 64,741.17 : x
  2. Step 2: Convert to fraction form
    118,459.56/163,462.95 = 64,741.17/x
  3. Step 3: Cross multiply
    118,459.56x = 163,462.95 × 64,741.17
  4. Step 4: Simplify right side
    118,459.56x = 10,582,782,634.65
  5. Step 5: Solve for x
    x = 10,582,782,634.65/118,459.56
  6. Step 6: Final answer
    x = 89,336.67

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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.