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Finding the Fourth Proportional to 58,338.55, 87,486.36 and 20,888.47

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Solution

The fourth proportional to 58,338.55, 87,486.36 and 20,888.47 is: 31,325.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,338.55 : 87,486.36 = 20,888.47 : x
  2. Step 2: Convert to fraction form
    58,338.55/87,486.36 = 20,888.47/x
  3. Step 3: Cross multiply
    58,338.55x = 87,486.36 × 20,888.47
  4. Step 4: Simplify right side
    58,338.55x = 1,827,456,206.27
  5. Step 5: Solve for x
    x = 1,827,456,206.27/58,338.55
  6. Step 6: Final answer
    x = 31,325.02

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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.