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Finding the Fourth Proportional to 118,532.68, 163,573.96 and 64,817.16

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Solution

The fourth proportional to 118,532.68, 163,573.96 and 64,817.16 is: 89,447.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,532.68 : 163,573.96 = 64,817.16 : x
  2. Step 2: Convert to fraction form
    118,532.68/163,573.96 = 64,817.16/x
  3. Step 3: Cross multiply
    118,532.68x = 163,573.96 × 64,817.16
  4. Step 4: Simplify right side
    118,532.68x = 10,602,399,537.15
  5. Step 5: Solve for x
    x = 10,602,399,537.15/118,532.68
  6. Step 6: Final answer
    x = 89,447.06

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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.