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Finding the Fourth Proportional to 108,663.80, 162,995.70 and 73,412.60

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Solution

The fourth proportional to 108,663.80, 162,995.70 and 73,412.60 is: 110,118.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,663.80 : 162,995.70 = 73,412.60 : x
  2. Step 2: Convert to fraction form
    108,663.80/162,995.70 = 73,412.60/x
  3. Step 3: Cross multiply
    108,663.80x = 162,995.70 × 73,412.60
  4. Step 4: Simplify right side
    108,663.80x = 11,965,938,125.82
  5. Step 5: Solve for x
    x = 11,965,938,125.82/108,663.80
  6. Step 6: Final answer
    x = 110,118.90

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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.