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Finding the Fourth Proportional to 112,618.60, 168,830.70 and 57,214.60

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Solution

The fourth proportional to 112,618.60, 168,830.70 and 57,214.60 is: 85,772.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,618.60 : 168,830.70 = 57,214.60 : x
  2. Step 2: Convert to fraction form
    112,618.60/168,830.70 = 57,214.60/x
  3. Step 3: Cross multiply
    112,618.60x = 168,830.70 × 57,214.60
  4. Step 4: Simplify right side
    112,618.60x = 9,659,580,968.22
  5. Step 5: Solve for x
    x = 9,659,580,968.22/112,618.60
  6. Step 6: Final answer
    x = 85,772.52

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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.