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Finding the Fourth Proportional to 92,893.94, 128,246.79 and 61,155.10

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Solution

The fourth proportional to 92,893.94, 128,246.79 and 61,155.10 is: 84,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,893.94 : 128,246.79 = 61,155.10 : x
  2. Step 2: Convert to fraction form
    92,893.94/128,246.79 = 61,155.10/x
  3. Step 3: Cross multiply
    92,893.94x = 128,246.79 × 61,155.10
  4. Step 4: Simplify right side
    92,893.94x = 7,842,945,267.13
  5. Step 5: Solve for x
    x = 7,842,945,267.13/92,893.94
  6. Step 6: Final answer
    x = 84,429.03

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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.