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Finding the Fourth Proportional to 112,615.60, 168,826.20 and 57,211.60

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Solution

The fourth proportional to 112,615.60, 168,826.20 and 57,211.60 is: 85,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,615.60 : 168,826.20 = 57,211.60 : x
  2. Step 2: Convert to fraction form
    112,615.60/168,826.20 = 57,211.60/x
  3. Step 3: Cross multiply
    112,615.60x = 168,826.20 × 57,211.60
  4. Step 4: Simplify right side
    112,615.60x = 9,658,817,023.92
  5. Step 5: Solve for x
    x = 9,658,817,023.92/112,615.60
  6. Step 6: Final answer
    x = 85,768.02

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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.