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Finding the Fourth Proportional to 108,695.80, 163,043.70 and 29,809.90

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Solution

The fourth proportional to 108,695.80, 163,043.70 and 29,809.90 is: 44,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,695.80 : 163,043.70 = 29,809.90 : x
  2. Step 2: Convert to fraction form
    108,695.80/163,043.70 = 29,809.90/x
  3. Step 3: Cross multiply
    108,695.80x = 163,043.70 × 29,809.90
  4. Step 4: Simplify right side
    108,695.80x = 4,860,316,392.63
  5. Step 5: Solve for x
    x = 4,860,316,392.63/108,695.80
  6. Step 6: Final answer
    x = 44,714.85

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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.