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Finding the Fourth Proportional to 92,565.40, 138,848.10 and 85,348.30

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Solution

The fourth proportional to 92,565.40, 138,848.10 and 85,348.30 is: 128,022.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,565.40 : 138,848.10 = 85,348.30 : x
  2. Step 2: Convert to fraction form
    92,565.40/138,848.10 = 85,348.30/x
  3. Step 3: Cross multiply
    92,565.40x = 138,848.10 × 85,348.30
  4. Step 4: Simplify right side
    92,565.40x = 11,850,449,293.23
  5. Step 5: Solve for x
    x = 11,850,449,293.23/92,565.40
  6. Step 6: Final answer
    x = 128,022.45

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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.