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Finding the Fourth Proportional to 108,807.36, 163,079.76 and 56,188.08

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Solution

The fourth proportional to 108,807.36, 163,079.76 and 56,188.08 is: 84,214.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,807.36 : 163,079.76 = 56,188.08 : x
  2. Step 2: Convert to fraction form
    108,807.36/163,079.76 = 56,188.08/x
  3. Step 3: Cross multiply
    108,807.36x = 163,079.76 × 56,188.08
  4. Step 4: Simplify right side
    108,807.36x = 9,163,138,601.26
  5. Step 5: Solve for x
    x = 9,163,138,601.26/108,807.36
  6. Step 6: Final answer
    x = 84,214.33

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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.