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Finding the Fourth Proportional to 61,390.86, 92,088.02 and 17,020.89

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Solution

The fourth proportional to 61,390.86, 92,088.02 and 17,020.89 is: 25,531.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,390.86 : 92,088.02 = 17,020.89 : x
  2. Step 2: Convert to fraction form
    61,390.86/92,088.02 = 17,020.89/x
  3. Step 3: Cross multiply
    61,390.86x = 92,088.02 × 17,020.89
  4. Step 4: Simplify right side
    61,390.86x = 1,567,419,973.63
  5. Step 5: Solve for x
    x = 1,567,419,973.63/61,390.86
  6. Step 6: Final answer
    x = 25,531.81

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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.