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Finding the Fourth Proportional to 108,742.80, 163,119.06 and 56,254.80

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Solution

The fourth proportional to 108,742.80, 163,119.06 and 56,254.80 is: 84,384.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,742.80 : 163,119.06 = 56,254.80 : x
  2. Step 2: Convert to fraction form
    108,742.80/163,119.06 = 56,254.80/x
  3. Step 3: Cross multiply
    108,742.80x = 163,119.06 × 56,254.80
  4. Step 4: Simplify right side
    108,742.80x = 9,176,230,096.49
  5. Step 5: Solve for x
    x = 9,176,230,096.49/108,742.80
  6. Step 6: Final answer
    x = 84,384.71

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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.