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Finding the Fourth Proportional to 660,619.44, 911,624.20 and 374,141.64

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Solution

The fourth proportional to 660,619.44, 911,624.20 and 374,141.64 is: 516,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,619.44 : 911,624.20 = 374,141.64 : x
  2. Step 2: Convert to fraction form
    660,619.44/911,624.20 = 374,141.64/x
  3. Step 3: Cross multiply
    660,619.44x = 911,624.20 × 374,141.64
  4. Step 4: Simplify right side
    660,619.44x = 341,076,573,251.69
  5. Step 5: Solve for x
    x = 341,076,573,251.69/660,619.44
  6. Step 6: Final answer
    x = 516,298.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.