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Finding the Fourth Proportional to 65,807.60, 98,711.40 and 18,422.60

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Solution

The fourth proportional to 65,807.60, 98,711.40 and 18,422.60 is: 27,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,807.60 : 98,711.40 = 18,422.60 : x
  2. Step 2: Convert to fraction form
    65,807.60/98,711.40 = 18,422.60/x
  3. Step 3: Cross multiply
    65,807.60x = 98,711.40 × 18,422.60
  4. Step 4: Simplify right side
    65,807.60x = 1,818,520,637.64
  5. Step 5: Solve for x
    x = 1,818,520,637.64/65,807.60
  6. Step 6: Final answer
    x = 27,633.90

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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.