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Finding the Fourth Proportional to 70,074.60, 105,506.87 and 61,806.12

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Solution

The fourth proportional to 70,074.60, 105,506.87 and 61,806.12 is: 93,057.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,074.60 : 105,506.87 = 61,806.12 : x
  2. Step 2: Convert to fraction form
    70,074.60/105,506.87 = 61,806.12/x
  3. Step 3: Cross multiply
    70,074.60x = 105,506.87 × 61,806.12
  4. Step 4: Simplify right side
    70,074.60x = 6,520,970,268.04
  5. Step 5: Solve for x
    x = 6,520,970,268.04/70,074.60
  6. Step 6: Final answer
    x = 93,057.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.