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Finding the Fourth Proportional to 108,706.80, 163,060.20 and 29,820.90

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Solution

The fourth proportional to 108,706.80, 163,060.20 and 29,820.90 is: 44,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706.80 : 163,060.20 = 29,820.90 : x
  2. Step 2: Convert to fraction form
    108,706.80/163,060.20 = 29,820.90/x
  3. Step 3: Cross multiply
    108,706.80x = 163,060.20 × 29,820.90
  4. Step 4: Simplify right side
    108,706.80x = 4,862,601,918.18
  5. Step 5: Solve for x
    x = 4,862,601,918.18/108,706.80
  6. Step 6: Final answer
    x = 44,731.35

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1.5x scale

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.