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Finding the Fourth Proportional to 66,811.10, 100,216.65 and 60,784.70

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Solution

The fourth proportional to 66,811.10, 100,216.65 and 60,784.70 is: 91,177.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,811.10 : 100,216.65 = 60,784.70 : x
  2. Step 2: Convert to fraction form
    66,811.10/100,216.65 = 60,784.70/x
  3. Step 3: Cross multiply
    66,811.10x = 100,216.65 × 60,784.70
  4. Step 4: Simplify right side
    66,811.10x = 6,091,639,005.26
  5. Step 5: Solve for x
    x = 6,091,639,005.26/66,811.10
  6. Step 6: Final answer
    x = 91,177.05

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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.