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Finding the Fourth Proportional to 58,417.44, 87,611.56 and 18,985.88

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Solution

The fourth proportional to 58,417.44, 87,611.56 and 18,985.88 is: 28,474.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,417.44 : 87,611.56 = 18,985.88 : x
  2. Step 2: Convert to fraction form
    58,417.44/87,611.56 = 18,985.88/x
  3. Step 3: Cross multiply
    58,417.44x = 87,611.56 × 18,985.88
  4. Step 4: Simplify right side
    58,417.44x = 1,663,382,564.77
  5. Step 5: Solve for x
    x = 1,663,382,564.77/58,417.44
  6. Step 6: Final answer
    x = 28,474.07

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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.