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Finding the Fourth Proportional to 65,458.89, 98,188.35 and 18,711.76

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Solution

The fourth proportional to 65,458.89, 98,188.35 and 18,711.76 is: 28,067.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,458.89 : 98,188.35 = 18,711.76 : x
  2. Step 2: Convert to fraction form
    65,458.89/98,188.35 = 18,711.76/x
  3. Step 3: Cross multiply
    65,458.89x = 98,188.35 × 18,711.76
  4. Step 4: Simplify right side
    65,458.89x = 1,837,276,840.00
  5. Step 5: Solve for x
    x = 1,837,276,840.00/65,458.89
  6. Step 6: Final answer
    x = 28,067.64

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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.