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Finding the Fourth Proportional to 407,988.72, 562,843.26 and 271,890.06

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Solution

The fourth proportional to 407,988.72, 562,843.26 and 271,890.06 is: 375,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,988.72 : 562,843.26 = 271,890.06 : x
  2. Step 2: Convert to fraction form
    407,988.72/562,843.26 = 271,890.06/x
  3. Step 3: Cross multiply
    407,988.72x = 562,843.26 × 271,890.06
  4. Step 4: Simplify right side
    407,988.72x = 153,031,487,732.00
  5. Step 5: Solve for x
    x = 153,031,487,732.00/407,988.72
  6. Step 6: Final answer
    x = 375,087.55

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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.