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Finding the Fourth Proportional to 118,715.94, 163,827.96 and 65,000.94

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Solution

The fourth proportional to 118,715.94, 163,827.96 and 65,000.94 is: 89,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,715.94 : 163,827.96 = 65,000.94 : x
  2. Step 2: Convert to fraction form
    118,715.94/163,827.96 = 65,000.94/x
  3. Step 3: Cross multiply
    118,715.94x = 163,827.96 × 65,000.94
  4. Step 4: Simplify right side
    118,715.94x = 10,648,971,398.28
  5. Step 5: Solve for x
    x = 10,648,971,398.28/118,715.94
  6. Step 6: Final answer
    x = 89,701.28

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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.