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Finding the Fourth Proportional to 58,681.61, 88,029.24 and 21,259.30

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Solution

The fourth proportional to 58,681.61, 88,029.24 and 21,259.30 is: 31,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,681.61 : 88,029.24 = 21,259.30 : x
  2. Step 2: Convert to fraction form
    58,681.61/88,029.24 = 21,259.30/x
  3. Step 3: Cross multiply
    58,681.61x = 88,029.24 × 21,259.30
  4. Step 4: Simplify right side
    58,681.61x = 1,871,440,021.93
  5. Step 5: Solve for x
    x = 1,871,440,021.93/58,681.61
  6. Step 6: Final answer
    x = 31,891.42

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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.