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Finding the Fourth Proportional to 108,656.20, 162,854.70 and 56,038.60

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Solution

The fourth proportional to 108,656.20, 162,854.70 and 56,038.60 is: 83,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,656.20 : 162,854.70 = 56,038.60 : x
  2. Step 2: Convert to fraction form
    108,656.20/162,854.70 = 56,038.60/x
  3. Step 3: Cross multiply
    108,656.20x = 162,854.70 × 56,038.60
  4. Step 4: Simplify right side
    108,656.20x = 9,126,149,391.42
  5. Step 5: Solve for x
    x = 9,126,149,391.42/108,656.20
  6. Step 6: Final answer
    x = 83,991.06

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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.