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Finding the Fourth Proportional to 59,891.60, 89,761.80 and 30,317.60

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Solution

The fourth proportional to 59,891.60, 89,761.80 and 30,317.60 is: 45,438.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,891.60 : 89,761.80 = 30,317.60 : x
  2. Step 2: Convert to fraction form
    59,891.60/89,761.80 = 30,317.60/x
  3. Step 3: Cross multiply
    59,891.60x = 89,761.80 × 30,317.60
  4. Step 4: Simplify right side
    59,891.60x = 2,721,362,347.68
  5. Step 5: Solve for x
    x = 2,721,362,347.68/59,891.60
  6. Step 6: Final answer
    x = 45,438.13

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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.