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Finding the Fourth Proportional to 60,947.60, 91,398.65 and 20,955.26

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Solution

The fourth proportional to 60,947.60, 91,398.65 and 20,955.26 is: 31,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,947.60 : 91,398.65 = 20,955.26 : x
  2. Step 2: Convert to fraction form
    60,947.60/91,398.65 = 20,955.26/x
  3. Step 3: Cross multiply
    60,947.60x = 91,398.65 × 20,955.26
  4. Step 4: Simplify right side
    60,947.60x = 1,915,281,912.63
  5. Step 5: Solve for x
    x = 1,915,281,912.63/60,947.60
  6. Step 6: Final answer
    x = 31,425.06

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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.