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Finding the Fourth Proportional to 59,870.60, 89,903.10 and 40,236.20

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Solution

The fourth proportional to 59,870.60, 89,903.10 and 40,236.20 is: 60,419.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,870.60 : 89,903.10 = 40,236.20 : x
  2. Step 2: Convert to fraction form
    59,870.60/89,903.10 = 40,236.20/x
  3. Step 3: Cross multiply
    59,870.60x = 89,903.10 × 40,236.20
  4. Step 4: Simplify right side
    59,870.60x = 3,617,359,112.22
  5. Step 5: Solve for x
    x = 3,617,359,112.22/59,870.60
  6. Step 6: Final answer
    x = 60,419.62

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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.