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Finding the Fourth Proportional to 58,681.87, 88,029.63 and 21,259.55

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Solution

The fourth proportional to 58,681.87, 88,029.63 and 21,259.55 is: 31,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,681.87 : 88,029.63 = 21,259.55 : x
  2. Step 2: Convert to fraction form
    58,681.87/88,029.63 = 21,259.55/x
  3. Step 3: Cross multiply
    58,681.87x = 88,029.63 × 21,259.55
  4. Step 4: Simplify right side
    58,681.87x = 1,871,470,540.54
  5. Step 5: Solve for x
    x = 1,871,470,540.54/58,681.87
  6. Step 6: Final answer
    x = 31,891.80

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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.