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Finding the Fourth Proportional to 870,447.05, 1,200,908.99 and 568,816.01

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Solution

The fourth proportional to 870,447.05, 1,200,908.99 and 568,816.01 is: 784,764.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,447.05 : 1,200,908.99 = 568,816.01 : x
  2. Step 2: Convert to fraction form
    870,447.05/1,200,908.99 = 568,816.01/x
  3. Step 3: Cross multiply
    870,447.05x = 1,200,908.99 × 568,816.01
  4. Step 4: Simplify right side
    870,447.05x = 683,096,251,216.31
  5. Step 5: Solve for x
    x = 683,096,251,216.31/870,447.05
  6. Step 6: Final answer
    x = 784,764.86

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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.