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Finding the Fourth Proportional to 57,690.60, 86,547.60 and 32,742.60

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Solution

The fourth proportional to 57,690.60, 86,547.60 and 32,742.60 is: 49,120.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,690.60 : 86,547.60 = 32,742.60 : x
  2. Step 2: Convert to fraction form
    57,690.60/86,547.60 = 32,742.60/x
  3. Step 3: Cross multiply
    57,690.60x = 86,547.60 × 32,742.60
  4. Step 4: Simplify right side
    57,690.60x = 2,833,793,447.76
  5. Step 5: Solve for x
    x = 2,833,793,447.76/57,690.60
  6. Step 6: Final answer
    x = 49,120.54

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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.