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Finding the Fourth Proportional to 108,700.90, 162,910.98 and 48,685.52

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Solution

The fourth proportional to 108,700.90, 162,910.98 and 48,685.52 is: 72,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,700.90 : 162,910.98 = 48,685.52 : x
  2. Step 2: Convert to fraction form
    108,700.90/162,910.98 = 48,685.52/x
  3. Step 3: Cross multiply
    108,700.90x = 162,910.98 × 48,685.52
  4. Step 4: Simplify right side
    108,700.90x = 7,931,405,775.01
  5. Step 5: Solve for x
    x = 7,931,405,775.01/108,700.90
  6. Step 6: Final answer
    x = 72,965.41

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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.