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Finding the Fourth Proportional to 58,575.66, 87,868.29 and 19,131.90

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Solution

The fourth proportional to 58,575.66, 87,868.29 and 19,131.90 is: 28,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,575.66 : 87,868.29 = 19,131.90 : x
  2. Step 2: Convert to fraction form
    58,575.66/87,868.29 = 19,131.90/x
  3. Step 3: Cross multiply
    58,575.66x = 87,868.29 × 19,131.90
  4. Step 4: Simplify right side
    58,575.66x = 1,681,087,337.45
  5. Step 5: Solve for x
    x = 1,681,087,337.45/58,575.66
  6. Step 6: Final answer
    x = 28,699.42

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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.