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Finding the Fourth Proportional to 638,011.51, 957,157.43 and 188,697.36

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Solution

The fourth proportional to 638,011.51, 957,157.43 and 188,697.36 is: 283,087.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,011.51 : 957,157.43 = 188,697.36 : x
  2. Step 2: Convert to fraction form
    638,011.51/957,157.43 = 188,697.36/x
  3. Step 3: Cross multiply
    638,011.51x = 957,157.43 × 188,697.36
  4. Step 4: Simplify right side
    638,011.51x = 180,613,080,145.39
  5. Step 5: Solve for x
    x = 180,613,080,145.39/638,011.51
  6. Step 6: Final answer
    x = 283,087.49

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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.