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Finding the Fourth Proportional to 118,165.68, 163,070.15 and 70,446.56

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Solution

The fourth proportional to 118,165.68, 163,070.15 and 70,446.56 is: 97,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,165.68 : 163,070.15 = 70,446.56 : x
  2. Step 2: Convert to fraction form
    118,165.68/163,070.15 = 70,446.56/x
  3. Step 3: Cross multiply
    118,165.68x = 163,070.15 × 70,446.56
  4. Step 4: Simplify right side
    118,165.68x = 11,487,729,938.60
  5. Step 5: Solve for x
    x = 11,487,729,938.60/118,165.68
  6. Step 6: Final answer
    x = 97,217.14

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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.