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Finding the Fourth Proportional to 657,057.73, 906,933.59 and 385,184.47

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Solution

The fourth proportional to 657,057.73, 906,933.59 and 385,184.47 is: 531,668.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,057.73 : 906,933.59 = 385,184.47 : x
  2. Step 2: Convert to fraction form
    657,057.73/906,933.59 = 385,184.47/x
  3. Step 3: Cross multiply
    657,057.73x = 906,933.59 × 385,184.47
  4. Step 4: Simplify right side
    657,057.73x = 349,336,734,189.35
  5. Step 5: Solve for x
    x = 349,336,734,189.35/657,057.73
  6. Step 6: Final answer
    x = 531,668.25

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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.