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Finding the Fourth Proportional to 61,978.66, 92,970.20 and 19,853.27

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Solution

The fourth proportional to 61,978.66, 92,970.20 and 19,853.27 is: 29,780.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,978.66 : 92,970.20 = 19,853.27 : x
  2. Step 2: Convert to fraction form
    61,978.66/92,970.20 = 19,853.27/x
  3. Step 3: Cross multiply
    61,978.66x = 92,970.20 × 19,853.27
  4. Step 4: Simplify right side
    61,978.66x = 1,845,762,482.55
  5. Step 5: Solve for x
    x = 1,845,762,482.55/61,978.66
  6. Step 6: Final answer
    x = 29,780.61

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.