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Finding the Fourth Proportional to 586,906.40, 880,359.60 and 143,674.40

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Solution

The fourth proportional to 586,906.40, 880,359.60 and 143,674.40 is: 215,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,906.40 : 880,359.60 = 143,674.40 : x
  2. Step 2: Convert to fraction form
    586,906.40/880,359.60 = 143,674.40/x
  3. Step 3: Cross multiply
    586,906.40x = 880,359.60 × 143,674.40
  4. Step 4: Simplify right side
    586,906.40x = 126,485,137,314.24
  5. Step 5: Solve for x
    x = 126,485,137,314.24/586,906.40
  6. Step 6: Final answer
    x = 215,511.60

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Similar ratio
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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.