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Finding the Fourth Proportional to 118,046, 162,905.64 and 67,756.88

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Solution

The fourth proportional to 118,046, 162,905.64 and 67,756.88 is: 93,505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,046 : 162,905.64 = 67,756.88 : x
  2. Step 2: Convert to fraction form
    118,046/162,905.64 = 67,756.88/x
  3. Step 3: Cross multiply
    118,046x = 162,905.64 × 67,756.88
  4. Step 4: Simplify right side
    118,046x = 11,037,977,900.80
  5. Step 5: Solve for x
    x = 11,037,977,900.80/118,046
  6. Step 6: Final answer
    x = 93,505.73

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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.