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Finding the Fourth Proportional to 42,699.07, 58,876.80 and 27,571.87

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Solution

The fourth proportional to 42,699.07, 58,876.80 and 27,571.87 is: 38,018.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,699.07 : 58,876.80 = 27,571.87 : x
  2. Step 2: Convert to fraction form
    42,699.07/58,876.80 = 27,571.87/x
  3. Step 3: Cross multiply
    42,699.07x = 58,876.80 × 27,571.87
  4. Step 4: Simplify right side
    42,699.07x = 1,623,343,475.62
  5. Step 5: Solve for x
    x = 1,623,343,475.62/42,699.07
  6. Step 6: Final answer
    x = 38,018.24

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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.