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Finding the Fourth Proportional to 92,836.66, 128,116.63 and 56,539.82

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Solution

The fourth proportional to 92,836.66, 128,116.63 and 56,539.82 is: 78,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,836.66 : 128,116.63 = 56,539.82 : x
  2. Step 2: Convert to fraction form
    92,836.66/128,116.63 = 56,539.82/x
  3. Step 3: Cross multiply
    92,836.66x = 128,116.63 × 56,539.82
  4. Step 4: Simplify right side
    92,836.66x = 7,243,690,417.27
  5. Step 5: Solve for x
    x = 7,243,690,417.27/92,836.66
  6. Step 6: Final answer
    x = 78,026.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.