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Finding the Fourth Proportional to 118,715.60, 178,073.40 and 113,466.80

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Solution

The fourth proportional to 118,715.60, 178,073.40 and 113,466.80 is: 170,200.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,715.60 : 178,073.40 = 113,466.80 : x
  2. Step 2: Convert to fraction form
    118,715.60/178,073.40 = 113,466.80/x
  3. Step 3: Cross multiply
    118,715.60x = 178,073.40 × 113,466.80
  4. Step 4: Simplify right side
    118,715.60x = 20,205,418,863.12
  5. Step 5: Solve for x
    x = 20,205,418,863.12/118,715.60
  6. Step 6: Final answer
    x = 170,200.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.