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Finding the Fourth Proportional to 375,087.72, 562,570.92 and 138,541.80

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Solution

The fourth proportional to 375,087.72, 562,570.92 and 138,541.80 is: 207,790.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,087.72 : 562,570.92 = 138,541.80 : x
  2. Step 2: Convert to fraction form
    375,087.72/562,570.92 = 138,541.80/x
  3. Step 3: Cross multiply
    375,087.72x = 562,570.92 × 138,541.80
  4. Step 4: Simplify right side
    375,087.72x = 77,939,587,884.46
  5. Step 5: Solve for x
    x = 77,939,587,884.46/375,087.72
  6. Step 6: Final answer
    x = 207,790.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.