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Finding the Fourth Proportional to 60,042.72, 90,063.96 and 56,389.06

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Solution

The fourth proportional to 60,042.72, 90,063.96 and 56,389.06 is: 84,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,042.72 : 90,063.96 = 56,389.06 : x
  2. Step 2: Convert to fraction form
    60,042.72/90,063.96 = 56,389.06/x
  3. Step 3: Cross multiply
    60,042.72x = 90,063.96 × 56,389.06
  4. Step 4: Simplify right side
    60,042.72x = 5,078,622,044.28
  5. Step 5: Solve for x
    x = 5,078,622,044.28/60,042.72
  6. Step 6: Final answer
    x = 84,583.48

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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.