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Finding the Fourth Proportional to 298,087.97, 411,185.88 and 187,530.47

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Solution

The fourth proportional to 298,087.97, 411,185.88 and 187,530.47 is: 258,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,087.97 : 411,185.88 = 187,530.47 : x
  2. Step 2: Convert to fraction form
    298,087.97/411,185.88 = 187,530.47/x
  3. Step 3: Cross multiply
    298,087.97x = 411,185.88 × 187,530.47
  4. Step 4: Simplify right side
    298,087.97x = 77,109,882,409.31
  5. Step 5: Solve for x
    x = 77,109,882,409.31/298,087.97
  6. Step 6: Final answer
    x = 258,681.63

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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.