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Finding the Fourth Proportional to 108,713.80, 163,070.70 and 75,536.20

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Solution

The fourth proportional to 108,713.80, 163,070.70 and 75,536.20 is: 113,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,713.80 : 163,070.70 = 75,536.20 : x
  2. Step 2: Convert to fraction form
    108,713.80/163,070.70 = 75,536.20/x
  3. Step 3: Cross multiply
    108,713.80x = 163,070.70 × 75,536.20
  4. Step 4: Simplify right side
    108,713.80x = 12,317,741,009.34
  5. Step 5: Solve for x
    x = 12,317,741,009.34/108,713.80
  6. Step 6: Final answer
    x = 113,304.30

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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.