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Finding the Fourth Proportional to 66,157.71, 99,251.95 and 21,784.86

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Solution

The fourth proportional to 66,157.71, 99,251.95 and 21,784.86 is: 32,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,157.71 : 99,251.95 = 21,784.86 : x
  2. Step 2: Convert to fraction form
    66,157.71/99,251.95 = 21,784.86/x
  3. Step 3: Cross multiply
    66,157.71x = 99,251.95 × 21,784.86
  4. Step 4: Simplify right side
    66,157.71x = 2,162,189,284.76
  5. Step 5: Solve for x
    x = 2,162,189,284.76/66,157.71
  6. Step 6: Final answer
    x = 32,682.35

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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.