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Finding the Fourth Proportional to 386,783.94, 533,771.03 and 217,030.62

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Solution

The fourth proportional to 386,783.94, 533,771.03 and 217,030.62 is: 299,507.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,783.94 : 533,771.03 = 217,030.62 : x
  2. Step 2: Convert to fraction form
    386,783.94/533,771.03 = 217,030.62/x
  3. Step 3: Cross multiply
    386,783.94x = 533,771.03 × 217,030.62
  4. Step 4: Simplify right side
    386,783.94x = 115,844,657,578.94
  5. Step 5: Solve for x
    x = 115,844,657,578.94/386,783.94
  6. Step 6: Final answer
    x = 299,507.41

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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.