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Finding the Fourth Proportional to 585,806.05, 878,709.12 and 211,741.57

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Solution

The fourth proportional to 585,806.05, 878,709.12 and 211,741.57 is: 317,612.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,806.05 : 878,709.12 = 211,741.57 : x
  2. Step 2: Convert to fraction form
    585,806.05/878,709.12 = 211,741.57/x
  3. Step 3: Cross multiply
    585,806.05x = 878,709.12 × 211,741.57
  4. Step 4: Simplify right side
    585,806.05x = 186,059,248,642.12
  5. Step 5: Solve for x
    x = 186,059,248,642.12/585,806.05
  6. Step 6: Final answer
    x = 317,612.37

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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.