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Finding the Fourth Proportional to 118,512.10, 163,591.41 and 70,748.02

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Solution

The fourth proportional to 118,512.10, 163,591.41 and 70,748.02 is: 97,658.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,512.10 : 163,591.41 = 70,748.02 : x
  2. Step 2: Convert to fraction form
    118,512.10/163,591.41 = 70,748.02/x
  3. Step 3: Cross multiply
    118,512.10x = 163,591.41 × 70,748.02
  4. Step 4: Simplify right side
    118,512.10x = 11,573,768,346.51
  5. Step 5: Solve for x
    x = 11,573,768,346.51/118,512.10
  6. Step 6: Final answer
    x = 97,658.96

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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.