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Finding the Fourth Proportional to 438,590.88, 605,219.04 and 257,283.84

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Solution

The fourth proportional to 438,590.88, 605,219.04 and 257,283.84 is: 355,030.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,590.88 : 605,219.04 = 257,283.84 : x
  2. Step 2: Convert to fraction form
    438,590.88/605,219.04 = 257,283.84/x
  3. Step 3: Cross multiply
    438,590.88x = 605,219.04 × 257,283.84
  4. Step 4: Simplify right side
    438,590.88x = 155,713,078,652.31
  5. Step 5: Solve for x
    x = 155,713,078,652.31/438,590.88
  6. Step 6: Final answer
    x = 355,030.36

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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.