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Finding the Fourth Proportional to 70,422.60, 105,637.56 and 17,832.60

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Solution

The fourth proportional to 70,422.60, 105,637.56 and 17,832.60 is: 26,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,422.60 : 105,637.56 = 17,832.60 : x
  2. Step 2: Convert to fraction form
    70,422.60/105,637.56 = 17,832.60/x
  3. Step 3: Cross multiply
    70,422.60x = 105,637.56 × 17,832.60
  4. Step 4: Simplify right side
    70,422.60x = 1,883,792,352.46
  5. Step 5: Solve for x
    x = 1,883,792,352.46/70,422.60
  6. Step 6: Final answer
    x = 26,749.83

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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.