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Finding the Fourth Proportional to 61,988.73, 92,994.63 and 28,686.79

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Solution

The fourth proportional to 61,988.73, 92,994.63 and 28,686.79 is: 43,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,988.73 : 92,994.63 = 28,686.79 : x
  2. Step 2: Convert to fraction form
    61,988.73/92,994.63 = 28,686.79/x
  3. Step 3: Cross multiply
    61,988.73x = 92,994.63 × 28,686.79
  4. Step 4: Simplify right side
    61,988.73x = 2,667,717,421.94
  5. Step 5: Solve for x
    x = 2,667,717,421.94/61,988.73
  6. Step 6: Final answer
    x = 43,035.52

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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.