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Finding the Fourth Proportional to 59,411.55, 81,920.12 and 47,466.75

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Solution

The fourth proportional to 59,411.55, 81,920.12 and 47,466.75 is: 65,449.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,411.55 : 81,920.12 = 47,466.75 : x
  2. Step 2: Convert to fraction form
    59,411.55/81,920.12 = 47,466.75/x
  3. Step 3: Cross multiply
    59,411.55x = 81,920.12 × 47,466.75
  4. Step 4: Simplify right side
    59,411.55x = 3,888,481,618.68
  5. Step 5: Solve for x
    x = 3,888,481,618.68/59,411.55
  6. Step 6: Final answer
    x = 65,449.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.