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Finding the Fourth Proportional to 438,829.60, 605,553.42 and 257,548.90

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Solution

The fourth proportional to 438,829.60, 605,553.42 and 257,548.90 is: 355,399.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,829.60 : 605,553.42 = 257,548.90 : x
  2. Step 2: Convert to fraction form
    438,829.60/605,553.42 = 257,548.90/x
  3. Step 3: Cross multiply
    438,829.60x = 605,553.42 × 257,548.90
  4. Step 4: Simplify right side
    438,829.60x = 155,959,617,212.24
  5. Step 5: Solve for x
    x = 155,959,617,212.24/438,829.60
  6. Step 6: Final answer
    x = 355,399.04

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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.