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Finding the Fourth Proportional to 617,653.76, 852,241.02 and 388,078.04

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Solution

The fourth proportional to 617,653.76, 852,241.02 and 388,078.04 is: 535,471.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,653.76 : 852,241.02 = 388,078.04 : x
  2. Step 2: Convert to fraction form
    617,653.76/852,241.02 = 388,078.04/x
  3. Step 3: Cross multiply
    617,653.76x = 852,241.02 × 388,078.04
  4. Step 4: Simplify right side
    617,653.76x = 330,736,018,447.61
  5. Step 5: Solve for x
    x = 330,736,018,447.61/617,653.76
  6. Step 6: Final answer
    x = 535,471.56

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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.