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Finding the Fourth Proportional to 482,783.05, 666,086.49 and 278,807.04

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Solution

The fourth proportional to 482,783.05, 666,086.49 and 278,807.04 is: 384,664.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,783.05 : 666,086.49 = 278,807.04 : x
  2. Step 2: Convert to fraction form
    482,783.05/666,086.49 = 278,807.04/x
  3. Step 3: Cross multiply
    482,783.05x = 666,086.49 × 278,807.04
  4. Step 4: Simplify right side
    482,783.05x = 185,709,602,660.89
  5. Step 5: Solve for x
    x = 185,709,602,660.89/482,783.05
  6. Step 6: Final answer
    x = 384,664.71

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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.