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Finding the Fourth Proportional to 118,394.76, 163,396.02 and 64,687.84

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Solution

The fourth proportional to 118,394.76, 163,396.02 and 64,687.84 is: 89,275.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,394.76 : 163,396.02 = 64,687.84 : x
  2. Step 2: Convert to fraction form
    118,394.76/163,396.02 = 64,687.84/x
  3. Step 3: Cross multiply
    118,394.76x = 163,396.02 × 64,687.84
  4. Step 4: Simplify right side
    118,394.76x = 10,569,735,598.40
  5. Step 5: Solve for x
    x = 10,569,735,598.40/118,394.76
  6. Step 6: Final answer
    x = 89,275.37

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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.